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William F. Friedman Collection of Official Papers

In one of its largest and most significant declassification and release of documents to date, the National Security Agency (NSA) released over 52,000 pages of historical material relating to the career of William. F. Friedman.

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Patent and Equipment Records

(Folder ID: ACC17260) Application for Patent on Facsimile Enciphering System and Related Correspondence, 1943-1951
Document ID Document Title Filename
A362458 United States Patent Office-Patent No. 2,552,548-- Facsimile Enciphering System; Application Serial No. 478,193 41767379080648.pdf
A362460 U.S. Patent Office Notice of Allowance 41767409080651.pdf
A362462 Notification Regarding Power of Attorney for Patent Applicant 41767429080653.pdf
A362463 Notification Regarding Power of Attorney for Patent Applicant 41767439080654.pdf
A362477 Extension of Patent Application, Serial No. 478,193 41767459080656.pdf
A362480 Patent Application, Serial No. 478,193, Under Provisions of U.S. Code, Title 35, Section 37 41767499080660.pdf
A362486 Power of Attorney-Patent Application of William F. Friedman, Serial No. 478,193 41767519080662.pdf
A362526 Patent Application, William F. Friedman Serial No. 478,193 41767539080664.pdf
A362530 Application for Patent of William F. Friedman, Ser. No. 478,193, Filed 6 Mar 43, for Sys. for Enciphering Fax, and Application for Patent of William F. Friedman and Joseph O. Mauborgne, Ser. No. 478,868, Filed 12 Mar 43, for Sys for Enciphering Fax 41767549080665.pdf
A362534 Applications of William F. Friedman, S.N. 478,868 and 478,193 41767569080667.pdf
A362536 Serial NO.478,193-478,868-551,172 Patent Applications of Wm. F. Friedman 41767589080669.pdf
A362541 Patent Application of William F. Friedman, SN 478,193 41767609080671.pdf
A362546 U.S. Patent Office Action 41767619080672.pdf
A362558 Request Regarding Patent Application of William F. Friedman, SN 478,193 41767649080675.pdf
A362563 U.S. Patent Office Actions Regarding U.S. Patent Applications Friedman and Mauborgne S.N. 478,868 and Friedman S.N. 478,193 41767669080677.pdf
A362620 Certificates of the Secretary of War Pertaining to Patent Applications 41767689080679.pdf
A362622 Memorandum for the Under Secretary of War Regarding Certificates 41767709080681.pdf
A362632 William F. Friedman-Invention 41767719080682.pdf
A362644 Patent Application on Facsimile Encipherment 41767729080683.pdf
A362659 Signal Corps Patent Board Action on Inventions of Friedman and Mauborgne 41767739080684.pdf
A362660 Final Action of Signal Corps Patent Board Relative to Inventions of Friedman and Mauborgne 41767749080685.pdf
A362662 Schemes for Enciphering Facsimile or Telephone Messages 41767759080686.pdf
A362663 Facsimile Enciphering System; Serial No. 478,193 41767769080687.pdf
A362664 Note Re Medal to Stauffer from Friedman 41767779080688.pdf
A362667 Cancellation of Claim 14 In Application for Patent, Serial Number 478,193 41767789080689.pdf
A362668 Application 478,193 41767799080690.pdf
A362669 U.S. Patent Examiner's Reply to Patent Application 41767809080691.pdf
A362671 Appeal Number 21,161 to U.S. Patent Office Regarding Patent Application Serial Number 478,193 41767819080692.pdf
A362674 U.S. Patent Office Examiner's Statement Regarding Patent Application Appeal Number 21,161 41767839080694.pdf
A362675 U.S. Patent Office Board of Appeals Hearing Regarding Patent Application Appeal Number 21,161 41767849080695.pdf
A362677 Patent Applicant Appeals Decision of Principal Examiner 41767859080696.pdf
A362680 Amendment to Patent Application, Serial Number 478,193 41767869080697.pdf
A362682 U.S. Patent Office Response to Amendment Filed Regarding Patent Application, Serial Number 478,193 41767879080698.pdf
A362685 U.S. Patent Office Response to Amendment Filed Regarding Patent Application, Serial Number 478,193 41767889080699.pdf
A362686 Revocation of Power of Attorney and Power of Attorney 41767899080700.pdf
A362691 Brief Supporting Government Compensation for Inventors Who Are Government Employees 41767909080701.pdf
A362697 Amendment Filed Regarding Patent Application, Serial Number 478,193 41767919080702.pdf
A362730 Amendment to Patent Application Serial Number 478, 193 41767929080703.pdf
A362732 U.S. Patent Office Response to Amendment Filed In Case of Patent Application Serial Number 478, 193 41767939080704.pdf
A362735 Amendment to Patent Application Serial Number 478, 193 41767949080705.pdf
A362740 U.S. Patent Office Examiner Rejects Claims 41767959080706.pdf
A362743 Certificate to Commissioner of Patents Regarding Cryptologic Invention 41767989080709.pdf
A362752 Assignment of Invention by William F. Friedman 41768019080711.pdf
A362758 Petition (Patent Application) 41768039080714.pdf
(Folder ID: ACC17261) Application for Patent on System for Enciphering Facsimiles and Related Correspondence, 1937-1959
Document ID Document Title Filename
A362761 United States Patent Office-Patent No. 2,465,367-System for Enciphering Facsimiles; Application Serial No. 478,868 41768099080720.pdf
A362772 Patent Application, William F. Friedman, Et AL, S.N. 478,868, Filed 12 March 1943 for System for Enciphering Facsimiles; Chief Signal Officer Document 41768109080721.pdf
A362774 Patent Applicants' Notification Regarding Power of Attorney 41768129080723.pdf
A362776 Patent Application, William F. Friedman, Et AL, S.N. 478,868, for System for Enciphering Facsimiles 41768149080725.pdf
A362802 Signature Request on Form for "Revocation Of Power Of Attorney And Power Of Attorney" 41768169080728.pdf
A362813 Amendment to Patent Application Serial Number 478,868 41768189080729.pdf
A362818 Response to Amendment Filed for Patent Application Serial No. 478,868 41768229080732.pdf
A362820 Patent Application, William F. Friedman, Et AL, Serial No. 478,868 41768249080734.pdf
A362823 Application for Patent of W. F. Friedman, Ser. No. 478,193, Filed 6 Mar 43, for System for Enciphering Facsimile, and Application for Patent of W. F. Friedman and Joseph O. Mauborgne, Ser. No. 478,868, Filed 12 Mar 43, for System for Enciphering Fax 41768259080735.pdf
A362851 Applications of William F. Friedman, S.N. 478,868 and 478,193 41768269080736.pdf
A362858 System for Enciphering Facsimile, Patent Application Serial No. 478,868 41768279080737.pdf
A362864 Patent Application of Friedman and Mauborgne, SN 478,868 41768299080738.pdf
A362872 U.S. Patent Office Actions Regarding Patent Applications Serial Nos. 478,868 and 478,193 41768319080741.pdf
A362877 Friedman and Mauborgne-Invention 41768349080744.pdf
A362894 Patent Application on Facsimile Encipherment 41768369080746.pdf
A362900 Friedman Suggests Delaying Tactics to ASA Official 41768499080759.pdf
A362923 Patent Applications 478,193 and 478,868 and Related Claims; Note from NSA Patent Attorney to W.H. Friedman 41768529080761.pdf
A362924 Patent Number 2,066,261 41768549080764.pdf
A362926 Petition for Patent Serial No. 478,868 41768569080766.pdf
A369861 United States Patent Office-Patent No. 2,465,367-System for Enciphering Facsimiles-1; Application Serial No. 478,868 41770769080985.pdf
(Folder ID: ACC17264) Application for Patent on Electrical Cryptograph and Related Correspondence, 1944-1959
Document ID Document Title Filename
A362929 U.S. Patent Office Form 41768579080767.pdf
A362931 W. F. Friedman Forwards Signed Papers to ASA Official; Routing Slip Only 41768659080775.pdf
A362933 Friedman Complements Work of ASA Official 41768679080777.pdf
A362937 ASA Official Comments on SIGFOY Case In Note to W.F. Friedman 41768769080786.pdf
A362942 ASA Official Cites Minor Changes to Document 41768799080789.pdf
A362945 W.F. Friedman Comments on Authentication Function and Crypto Function 41768849080794.pdf
A362951 ASA Official Comments on the SIGFOY 41768879080797.pdf
A362953 Development Branch Comments 41768949080804.pdf
A362956 U.S. Patent Office Final Fee Receipt; Patent # 2877565, Electrical Cryptograph 41768979080807.pdf
A362959 the SIGFOY Case 41769009080810.pdf
A362961 Receipt of Converter Equipment 41769039080813.pdf
A362968 U.S. Patent Office Patent Number 2,877,565-Electrical Cryptograph 41769079080817.pdf
A362973 U.S. Patent Office Examiner Communication Concerning Patent Application Serial No. 549,086 for Electrical Cryptograph 41769099080818.pdf
A363064 U.S. Patent Office Notice of Allowance 41769129080822.pdf
A363073 Patent Application Serial Number 549,086-Electrical System 41769159080825.pdf
A363075 Rescinding Order-Patent Application Serial Number 549,086-Electrical System 41769189080828.pdf
A363081 Application for Patent Ser. No. 549086 41769219080831.pdf
A363089 Application for Patent Ser. No. 549086 41769249080834.pdf
A363090 Application for Patent Ser. No. 549086 41769279080837.pdf
A363095 the SIGFOY Case 41769299080839.pdf
A363097 Patent Application Serial No. 549,086-William F. Friedman-Filed 11 August 1944 41769319080841.pdf
A363100 U.S. Patent Office Communication on Patent Application Serial No. 549,086-Electrical System 41769339080843.pdf
A363104 U.S. Patent Office Communication on Patent Application Serial No. 549,086-Electrical System 41769359080845.pdf
A363106 U.S. Patent Office Communication on Patent Application Serial No. 549,086-Electrical System 41769379080847.pdf
A363107 JAG Request Regarding Patent Application Serial No. 549,086-Electrical System 41769399080849.pdf
A363109 U.S. Patent Office Communication Regarding Patent Application Serial No. 549,086-Electrical System 41769409080850.pdf
A363110 U.S. Patent Office Communication Concerning Patent Application Serial No. 549,086-Electrical System 41769419080851.pdf
A363113 U.S. Patent Office Communication on Patent Application Serial No. 549,086-Electrical System 41769429080852.pdf
A363120 U.S. Patent Office Issuance of Permit A and Secrecy Order-Patent Application Serial No. 549,086-Electrical System 41769449080853.pdf
A363122 Power of Attorney In Case of Patent Application Serial No. 549,086-Electrical System 41769459080854.pdf
A363127 U.S. Patent Office Communication on Patent Application Serial No. 549,086-Electrical System 41769469080855.pdf
A363130 Patent Application Serial No. 549,086 41769479080856.pdf
A363132 Secretary of the Army Request Regarding Patent Application Serial No. 549,086-Electrical System 41769489080857.pdf
A363144 William F. Friedman Correspondence with U.S. Secretary of War on Patent Application Serial No. 549,086-Electrical System 41769499080858.pdf
A363148 Secrecy Orders-Patent Application Serial No. 549,086-Electrical System 41769519080860.pdf
A363152 Acting U.S. Secretary of War Communication on Patent Application Serial No. 549,086-Electrical System 41769529080861.pdf
A363156 Army Service Forces Request Regarding Handling of Patent Application on Electrical System by William F. Friedman 41769539080862.pdf
A363158 Forms of Mr. William F. Friedman 41769549080863.pdf
A363161 Army Service Forces Communication on William F. Friedman's Patent Application Entitled "Electrical System" 41769559080864.pdf
A363166 Semiannual or Transfer Report of Registered Documents (or Devices)-SIGFOY Case 41769569080865.pdf
A363175 Transfer Report of Registered Devices-M325 (Model T-3) 41769579080866.pdf
A363181 Receipt of Model, T-3, Converter M-325, Inventor William F. Friedman 41769589080867.pdf
A363188 Amendment to Patent Application Serial No. 549,086-Electrical System 41769599080868.pdf
A363192 U.S. Patent Office Notice of Allowability-Patent Application Serial No. 549,086-Electrical System 41769609080869.pdf
A363195 Amendment to Patent Application Serial No. 549,086-Electrical System 41769619080870.pdf
A363199 U.S. Patent Office Communication on Claims of Patent Application Serial No. 549,086-Electrical System 41769629080871.pdf
A363200 U.S. Patent Office Communication on Amendment to Patent Application 41769639080872.pdf
A363201 Description of "Electrical System, " Invention Of William F. Friedman 41769649080873.pdf
A363214 Electrical System-Inventor: William F. Friedman 41769659080874.pdf
A363245 Amendment to Patent Application Serial No. 549,086-Electrical System 41769669080875.pdf
A363248 Amendment to Patent Application Serial No. 549,086-Electrical System 41769679080876.pdf
A363251 U.S. Patent Office on Amendment Filed to Patent Application Serial No. 549,086-Electrical System 41769699080878.pdf
A363254 Amendment to Patent Application Serial No. 549,086-Electrical System 41769719080880.pdf
A363256 U.S. Patent Office Response to Amendment to Patent Application Serial No. 549,086-Electrical System 41769739080882.pdf
A363257 U.S. Patent Office Communication on Patent Application Serial No. 549,086-Electrical System 41769749080883.pdf
A363258 Amendment to Patent Application Serial No. 549,086-Electrical System 41769759080884.pdf
A363265 Information on Invention by William F. Friedman-Patent Application Serial No. 549,086-Electrical System 41769779080886.pdf
A363272 Amendment to Patent Application Serial No. 549,086-Electrical System 41769799080888.pdf
A363282 Amendment to Patent Application Serial No. 549,086-Electrical System 41769819080890.pdf
A363287 Diagrams of Invention by William F. Friedman 41769839080892.pdf
A363292 Dept. of Commerce Classified Material Receipt-Patent Office Final Rejection of Patent Application Ser. No. 549,086 41769859080894.pdf
A363295 Change of Address for ASA Attorney on the Case Involving Patent Application Ser. No. 549,086-Electrical System 41769879080896.pdf
A363298 Corrections to Drawings In Patent Application Ser. No. 549,086-Electrical System 41769899080898.pdf
A363300 Revocation of Power of Attorney In Case of Patent Application Ser. No. 549,086-Electrical System 41769919080900.pdf
A363301 Power of Attorney In Case of Patent Application Ser. No. 549,086-Electrical System 41769939080902.pdf
A363304 Certificate Issued by War Department Regarding Invention of William F. Friedman "Electrical System" 41769959080904.pdf
A363326 Petition In the Case of William F. Friedman, Inventor of Electrical System 41769979080906.pdf
A363341 Assignment In the Case of William F. Friedman, Inventor of Electrical System 41769999080908.pdf
A363342 License In the Case of William F. Friedman, Inventor of Electrical System 41770009080909.pdf
A363349 Secretary of War Communication on Invention of William F. Friedman 41770019080910.pdf
A363367 Draft-Description of William F. Friedman's Invention of Electric Cryptographic Devices 41770029080911.pdf
A363369 Friedman Claims; Handwritten Note Re M.I.T 41770039080912.pdf
A363371 William F. Friedman's Sketch of Device 41770049080913.pdf
A363373 Form for Petition for Patent by William F. Friedman 41770059080914.pdf
A363377 Form for Petition for Patent by William F. Friedman 41770079080916.pdf
A363395 William F. Friedman's Application for Letters Patent-Electric Cryptographic Devices 41770099080918.pdf
A363401 Wiring Diagram Authenticator-M325 Converter; William F. Friedman-Inventor 41770109080919.pdf
A4164178 Crypto Machine Drawings 41789589082858.pdf
(Folder ID: ACC17265) Application for Patent on Authenticating Device and Related Correspondence, 1944-1950
Document ID Document Title Filename
A363409 U.S. Patent Office Notice of Allowance-Patent Application Ser. No. 551,172-Authenticating Device 41770139080922.pdf
A363413 Petition Granted-Patent Application Ser. No. 551,172-Authenticating Device 41770159080924.pdf
A363420 Petition to Revive-Patent Application Ser. No. 551,172-Authenticating Device 41770169080925.pdf
A363422 Extension Granted-Patent Application Ser. No. 551,172-Authenticating Device 41770179080926.pdf
A363425 Power of Attorney In Case of Patent Application Ser. No. 551,172-Authenticating Device 41770199080928.pdf
A363427 Power of Attorney Revoked In Case of Patent Application Ser. No. 551,172-Authenticating Device 41770209080929.pdf
A363432 Power of Attorney Accepted In Case of Patent Application Ser. No. 551,172-Authenticating Device 41770229080931.pdf
A363435 Power of Attorney Revoked In Case of Patent Application Ser. No. 551,172-Authenticating Device 41770239080932.pdf
A363441 U.S. Patent Office Communication on Patent Application Ser. No. 551,172-Authenticating Device 41770269080935.pdf
A363447 Photographic Requisition 41770309080939.pdf
A363452 Applications for Patent-SN 478,193 and SN 478,868 41770319080940.pdf
A363453 File 334.7-Signal Corps Patent Board (1936 Thru December 1940) 41770329080941.pdf
A363460 Applications for Patent Serial Numbers 551,172/478,193 41770339080942.pdf
A363462 Patents Respecting Inventions of William F. Friedman 41770349080943.pdf
A363465 Applications for Patent Serial Numbers 551,172/478,193 41770359080944.pdf
A363467 Applications for Patent SN 478,193 and SN 478,868 41770369080945.pdf
A363471 Comments on Cryptographic Information 41770379080946.pdf
A363475 Applications for Patent SN 478,193 and SN 478,868 41770389080947.pdf
A363482 Recommendations and Comments Regarding Applications for Patent SN 478,193, SN 478,868 and SN 551,172 41770399080948.pdf
A363484 Recommendations and Comments Regarding Applications for Patent SN 478,193, SN 478,868 and SN 551,172 41770409080949.pdf
A363486 Secrecy Order-Serial Number 551,172 41770419080950.pdf
A363487 Secrecy Orders 41770429080951.pdf
A363499 Patent Application-Applications for Patent SN 478,193 and SN 478,868, and SN 551,172 41770439080952.pdf
A363502 Serial No. 478,193-478,868-551,172 Patent Applications of Wm. F. Friedman 41770449080953.pdf
A363527 War Department Communication on Patent Application Ser. No. 551,172-Authenticating Device 41770459080954.pdf
A363528 Patent Application of William F. Friedman, Serial No. 551,172 41770469080955.pdf
A363532 William F. Friedman, SN 551,172 on Authenticating Device 41770479080956.pdf
A363539 Patent Application "Authenticating Device" Filed and Assigned Serial Number 551,172 41770489080957.pdf
A363541 Authenticating Devices of William F. Friedman 41770499080958.pdf
A363543 Authenticating Device; Plans to File Patent Application 41770509080959.pdf
A363544 Authenticating Device; Proposed Application for Patent-Friedman 41770519080960.pdf
A363547 Authenticating Device; Evaluation of Friedman Device 41770529080961.pdf
A363549 Authenticating Devices of William F. Friedman 41770539080962.pdf
A363552 Processing of Inventions Originating at Signal Security Agency 41770549080963.pdf
A363555 Invention of Authenticating Device for Commercial Usage 41770559080964.pdf
A363558 U.S. Patent Office-Patent Nr. 2,518,458-Authenticating Device 41770569080965.pdf
A363561 Draft-Description of Authenticating Device-Invention of William Friedman 41770579080966.pdf
A363562 Amendment to Patent Application for Authenticating Device-Serial Number 551,172 41770589080967.pdf
A363563 Fee Received for Patent Application for Authenticating Device-Serial Number 551,172 41770599080968.pdf
A363565 U.S. Patent Number 2,518,458 41770609080969.pdf
A363567 U.S. Patent Office Communication on Claims of Patent Application "Authenticating Device"-Serial Number 551,172 41770619080970.pdf
A363568 Amendment to Patent Application "Authenticating Device"-Serial Number 551,172 41770629080971.pdf
A363573 U.S. Patent Office Communication on Patent Application for "Authenticating Device"-Serial Number 551,172 41770639080972.pdf
A363574 Amendment to Patent Application for "Authenticating Device"-Serial Number 551,172 41770649080973.pdf
A363576 Petition to Revive-Patent Application for "Authenticating Device"-Serial Number 551,172 41770659080974.pdf
A363579 Receipt for Patent Application for "Authenticating Device" 41770669080975.pdf
A363583 Revocation of Power of Attorney and Power of Attorney for the Case of Patent Application 551,172-Authenticating Device 41770679080976.pdf
A363588 Power of Attorney for the Case of Patent Application Ser. No. 551,172-Authenticating Device 41770689080977.pdf
A364194 Certificate-for Invention of William F. Friedman-Authenticating Device 41770699080978.pdf
A364202 Petition-by William F. Friedman for Improvement of Authenticating Device 41770709080979.pdf
A364290 Draft Notes on William F. Friedman's Invention "Authenticating Device" 41770719080980.pdf
A364316 License Application of William F. Friedman 41770729080981.pdf
A364540 Assignment for Invention "Authenticating Device" 41770739080982.pdf
A364549 Patent Record 41770749080983.pdf
A367433 Rejected Claims-Patent Application, Serial No. 551,172, for Authenticating Device 41770759080984.pdf
(Folder ID: ACC34839) Memoranda, Patent Applications Nos. 107,244 and 682,096 of William F. Friedman Re: Proposed Motion Control Means, 19 September 1949
Document ID Document Title Filename
A101106 Patent Applications Nos. 107,244 and 682,096 of William F. Friedman Re Proposed Motion Control Means 41769069080816.pdf
(Folder ID: ACC34876) Memoranda on Cryptographic Patents and Friedman's Original Worksheets of the Hebern Solution, 1935-1948
Document ID Document Title Filename
A4126886 Friedman's Original Worksheets of Hebern Solution, 11 Nov 1936 41785309082436.pdf
(Folder ID: FOLDER 054) Guidelines for Security Classification, 1955; Open Source Mention of Use of Electronic Computers In Cryptography, 1957; Crypto-Mathematics Institute Bulletin, September 1958
Document ID Document Title Filename
A40393 Guide Lines for Security Classifications; Appendix to NSA Reg 121-7 Dtd 8 April 1955 41707309074662.pdf
A40399 Open Source Mention of Use of Electronic Computers In Cryptography 41707859074717.pdf
A40408 Letter of Appreciation Forwarded by the Naval War College to Adm. Stone 41707879074719.pdf
A40409 Crypto-Mathematics Institute Bulletin 41707899074721.pdf
A40415 Building A Who's Who File on Members of the Crypto-Mathematic Institute 41707919074723.pdf
(Folder ID: FOLDER 066) Patent Data SISDE-17, Application No. 478,193, 1936-1951
Document ID Document Title Filename
A105156 Schematic of Patent No. 2,552,548 Facsimile Enciphering System 41716769075607.pdf
A105169 Decision of Board of Appeals In Appeal No. 21,161 Regarding Application for Patent Filed March 6, 1943, Serial No. 478,193. System for Enciphering Facsimile 41716959075625.pdf
A105171 Patent Allowed for Facsimile Enciphering System (AS Amended by Examiner) Serial Number 478,193 41716259075556.pdf
A105177 Applications for Patent Serial Numbers 551,172/478,193 41716979075627.pdf
A105178 Applications for Patent-SN 478,193 and SN 478,868 41716739075604.pdf
A105180 Appeal Number 21,161 Regarding Application for Patent of William F. Friedman, System for Enciphering Facsimile, Serial Number 478,193, Filed 6 March 1943 41716819075612.pdf
A105182 Board of Appeals Finding Regarding Claim 14, Appeal No. 21,161, Patent Ser. No. 478,193, System for Enciphering Facsimile 41716849075615.pdf
A105185 Appeal Regarding Final Rejection of Claim 14, Serial Number 478,193 for System for Enciphering Facsimile 41716679075598.pdf
A105187 Amendment In Response to Final Rejection of 28 January 1949 Regarding Serial Number 478,193 for System for Enciphering Facsimile 41716879075618.pdf
A105194 Applications for Patent-SN 478,193 and SN 478,868 41716809075611.pdf
A105198 Amendment to Application of William F. Friedman, Serial Number 478,193 for System for Enciphering Facsimile 41716989075628.pdf
A105208 Patent Office Ruling on Serial No. 478,193 Filed March 6, 1943, System for Enciphering Facsimile 41716999075629.pdf
A105212 Signal Corps Legal Instructions for Patent Application for System for Enciphering Facsimile 41717009075630.pdf
A105219 Signal Corps Patent Board Decisions Regarding Inventions by Mauborgne and Friedman 41717029075632.pdf
A105224 Cover Letter for Schematics of Inventions by Mauborgne and Friedman for Enciphering Facsimile or Telephoto 41717039075633.pdf
A114629 Amendment to Friedman Patent Serial No. 478,193 41717089075638.pdf
A114635 U.S. Patent Office Response to 20 October 1947 Amendment Friedman Application Patent 478,193 41717109075640.pdf
A114644 U.S. Patent Office Response to Amendment Friedman Application Patent No. 478,193; System for Enciphering Facsimile 41717129075641.pdf
A4161572 Patient Application of William F. Friedman, SN 478, 193 41705899074521.pdf
A4161573 Applications of William F. Friedman, S.N. 478, 868 and 478, 193 41705929074524.pdf
(Folder ID: FOLDER 067) Patent Data SISDE-18, Application No. 478,868, System for Enciphering and Deciphering Telephotograms, Friedman and Mauborgne (1943), 1924-1947
Document ID Document Title Filename
A105094 Amendment to Application for Patent 478,868 of William F. Friedman and Joseph O. Mauborgne; Responds to Patent Office Comments of 9 June 1948 41716489075579.pdf
A105098 William Friedman Etal Patent Application 478,868, System for Enciphered Facsimile; Memo from U.S. Patent Office to Legal Division, Chief Signal Officer 41716509075581.pdf
A105101 Patent Applications of William F. Friedman, S.N. 478,868 and 478,193; Memos Regarding Rescinding Secrecy 41716529075584.pdf
A105124 Friedman and Mauborgne Patent Applications; Army Security Agency Memos Agreeing to Declassification & Release of Patent Applications 41715579075488.pdf
A105127 Patent Application of Friedman and Mauborgne, SN 478,868; Letter from S. Kullback to Chief Signal Officer's Legal Division 41716559075586.pdf
A105128 Amendment to Patent Application 478,868 of William F. Friedman and Joseph O. Mauborgne; Patent for System for Enciphering Facsimile 41716569075587.pdf
A105132 Petition for Patent by William F. Friedman and J.O. Mauborgne for A System for Enciphering Facsimile; Petition to Commissioner of Patents and Specification of Invention 41716579075588.pdf
A105134 William Friedman & Colonel Mauborgne's Joint Application for A Patent Entitled "System For Enciphering Facsimile"; Letter from Office of Legal Director, Signal Corps 41716599075590.pdf
A105136 U.S. Patent Applications Friedman and Mauborgne S.N. 478,868 and Friedman S.N. 478,193; Letter to William Friedman from Patents & Inventions Counsel, Signal Corps 41716609075591.pdf
A105137 Patent Application on Facsimile Encipherment; Memo from William Friedman to Mr. Hall, Patents Sec, Legal Div, OCSIGO 41716449075575.pdf
A105139 Applications for Patents by William Friedman and Colonel Mauborgne; Memo from Major Browning, Signal Corps Patent Board 41716629075593.pdf
A105140 Letter from William Friedman to Colonel Mauborgne, Signal Corps, Wright Field; Acknowledgement of Previous Letter from Colonel Mauborgne 41716649075595.pdf
A105141 Letter from Mauborgne, Wright Field, to William F. Friedman; Patent Application 41716659075596.pdf
A105142 Signal Corps Patent Board Findings Regarding Inventions by Mauborgne and Friedman 41716669075597.pdf
A105146 Cover Letter for Two Methods of Enciphering Facsimile 41716149075545.pdf
A105147 Letter to Colonel Mauborgne with Photostats of A Method of Enciphering Facsimile 41716689075599.pdf
A105148 Sketches of Mauborgne's and Friedman's System for Enciphering Facsimile 41716789075609.pdf
A105150 Proposal for Secrecy In the Jenkins Radio Picture System 41716719075602.pdf
A105153 Draft Description of Mauborgne's and Friedman's Method for Secret Transmission and Reception of Photographs by Electric Means 41716909075622.pdf
A114610 Friedman and Mauborgne to U.S. Patent Office-Amendments to Patent Claim No. 478,868 41717059075635.pdf
A114619 Patent Examiner Rejection of Claim 4 Serial 478,868 Friedman Patent Application; Patent of System for Enciphering Facsimile 41717069075636.pdf
A4161575 Routing and Work Sheet 41705959074527.pdf
(Folder ID: FOLDER 068) Patent Data SISDE-14, Systems and Means for Enciphering and Deciphering Magnetically Recorded Signals, 1932-1937
Document ID Document Title Filename
A105027 Engineering Report No. 20-Investigation of Telegraphone AS A Means for Introducing A Time Delay In A Signal Network; Originated by Signal Corps Laboratories, Fort Monmouth, NJ 41716339075564.pdf
A105034 Note from William Friedman Discussing Old Records; Notes Between William Friedman and Mr. Mathews, R&D 41716349075565.pdf
A105036 Request for Resubmission of Invention to Signal Corps Patent Board; Memo from William Friedman and Captain Miller 41716239075554.pdf
A105039 Request for Comments on Invention by Captain Miller and Wm. Friedman-System and Means for Enciphering and Deciphering Magnetically Recorded Signals; Memo and Schematics from Signal Corps, Washington to Signal Corps Laboratories, Fort Monmouth, NJ and Reply 41716179075548.pdf
A105040 Joint Invention of A System and Means for Enciphering and Deciphering Magnetically-Recorded Signals 41716189075549.pdf
A105042 Means of Securing Secrecy In Voice Communications; Letter from Captain Miller, Signal Corps, Concerning His and William Friedman's Work 41716359075566.pdf
A105043 Cover Memo for Description of System for Automatic Sorting of Documents; Memo from William Friedman to Signal Corps, R&D Division 41716389075569.pdf
A105053 Letters Between Major Ranger, President of Rangertone, Inc., and William Friedman Regarding Tests of Tape Recordings 41716159075546.pdf
A105054 Sound Recording on Magnetic Tape; Article by C.N. Hickman In Bell System Technical Journal, April 1937 41716169075547.pdf
A105055 Signal Corps Patent Board Reconsideration of Proposal by Friedman and Miller; Finding on Proposal for System for Enciphering and Deciphering Magnetically-Recorded Signals 41716319075562.pdf
A105059 Comments by Captain Miller and Friedman on Invention and Recommendation for Patent Application Filing; Query from Signal Corps, R&D to Miller and Friedman and Response 41716219075552.pdf
A105062 Comments by Signal Corps Laboratories, Fort Monmouth, NJ on Invention by Captain Miller and Mr. Wm. Friedman; Includes Margin Comment 41716279075558.pdf
A105066 System and Means for Enciphering and Deciphering Magnetically Recorded Signals; Memo and Two Sketches of the System Invented by Captain Miller and William F. Friedman 41716409075571.pdf
A105070 Magnetically Recorded Signals; Letter from Signal Corps Laboratories Concerning Invention of Captain Miller and William Friedman 41715449075475.pdf
A105075 Proposed Modification to Friedman & Miller's Magnetic Tape Recording Invention; Draft Memo to Chief Signal Officer Regarding Patent Application 41716429075573.pdf
A105077 Joint Invention of A System and Means for Enciphering and Deciphering Magnetically-Recorded Signals 41716469075577.pdf
A4161576 Schematic Representation of "System And Means For Enciphering And Deciphering Magnetically Recorded Signals"; Invented by: William F Friedman, Harold Miller 41705979074529.pdf
(Folder ID: FOLDER 069) Patent Data SISDE-12 & SISDE-13, Cryptanalytic Coincidence Counter Ideomorph and Isomorph Locator, 1937-1950
Document ID Document Title Filename
A105025 Continuous Isomorphic Patternizer; Note from S. Kullback to William Friedman 41715609075491.pdf
A105026 Descriptions of Coincidence Machine and Machine for Locating Idiomorphs and Isomorphs; Cover Note and Enclosures from William F. Friedman to Dr. Kullback 41716299075560.pdf
(Folder ID: FOLDER 070) Patent Data SISDE-4, Serial No. 350,713, Patent No. 1,857,374, Cryptograph, Evans, Friedman, and Graham (1924), 1923-1924
Document ID Document Title Filename
A105019 Description of Typewriter Cryptographing Machine by William Friedman; Text and Drawings 41714649075396.pdf
A105020 Modification of Teletype Apparatus for Cryptographic Purposes; Memo from Colonel McClure, Signal Corps to the Personnel Division, Training Section 41715209075451.pdf
A105021 Proposal for Modifying Teletype Apparatus for Cipher Purposes; Conceived by William F. Friedman, Cryptanalyst, Signal Corps 41716089075539.pdf
A105022 Description of New Device to Encode and Decode Teletype Messages; Text and Drawings AS Conceived by William F. Friedman Et AL 41716109075541.pdf
A105023 Description of Devices for Enciphering Teletype Messages; Invention of William F. Friedman Et AL 41715479075478.pdf
A105024 Notes Between William Friedman, Major Evans , and Mr. Graham Concerning Patent Issue 41716129075543.pdf
A4161814 Cryptographic Machine Description 41785499082451.pdf
(Folder ID: FOLDER 071) Extracted Minutes of Signal Corps Patent Board, Meetings No. 1-39 Regarding Crypto-Systems Discussions, 1936-1941
Document ID Document Title Filename
A104846 Cover Note from William Friedman Re Signal Corps Patent Board Meetings; Reference Signal Corps File 334.7 41715079075438.pdf
A104852 Signal Corps Patent Board Meeting No. 32, 23 September 1941; Agenda Includes Cryptograph by William Friedman and Frank Rowlett 41715129075443.pdf
A104862 Signal Corps Patent Board Meeting No. 34, 10 March 1942 41714719075402.pdf
A104863 Signal Corps Patent Board Meeting No. 35, 7 April 1942 41715169075446.pdf
A104866 Signal Corps Patent Board Meeting No. 36, 5 May 1942 41714869075416.pdf
A104869 Signal Corps Patent Board Meeting No. 37, 1 July 1942 41715239075453.pdf
A104875 Signal Corps Patent Board Meeting No. 38, 4 August 1942 41714599075390.pdf
A104879 Signal Corps Patent Board Meeting No. 39, 12 September 1942 41713509075281.pdf
A104884 Signal Corps Patent Board Meeting No. 30, 22 November 1940; Board Recommendations on Inventions 41713949075325.pdf
A104886 Signal Corps Patent Board Meeting No. 25, 7 February 1939; Includes Recommendation on Invention by William Friedman 41715349075465.pdf
A104887 Signal Corps Patent Board Meeting No. 20, 10 March 1938; Recommendation Concerning Simple Cipher Device Submitted by William Friedman 41715389075469.pdf
A104889 Signal Corps Patent Board Meeting No. 13, 18 July 1937; Agenda Includes Query and Recommendation Concerning Invention by William Friedman 41715429075473.pdf
A104893 Signal Corps Patent Board Meeting No. 12, 24 June 1937; Agenda Includes Several Inventions by William F. Friedman 41715279075458.pdf
A104898 Signal Corps Patent Board Meeting No. 9, 31 December 1936; Discussion and Recommendations Include Several Inventions by William Friedman 41715629075493.pdf
A104902 Signal Corps Patent Board Meeting No. 6, 28 August 1936; Board Recommendations Concerning Several Friedman Inventions 41715259075456.pdf
A104907 Memo Calling Meeting of the Signal Corps Patent Board on 28 August 1936; Agenda Includes Several Inventions by William Friedman and Others 41714409075371.pdf
A104910 Proceedings of Patent Board; Memo from Acting Chief Signal Officer to Aircraft Radio Laboratory, Wright Field, OH 41715299075460.pdf
A104912 Memo Calling for Meeting of the Signal Corps Patent Board; Agenda Includes Several Inventions by William Friedman and Others 41714819075412.pdf
A104916 Signal Corps Patent Board Meeting No. 3, 26 May 1936; Discussion of Inventions and Patent Applications of William F. Friedman 41715329075463.pdf
A104921 Signal Corps Patent Board Meeting No. 2; Recommendation on Patent Applications by William Friedman Et AL 41715559075486.pdf
A104925 Signal Corps Patent Board Meeting No. 1 41715499075480.pdf
(Folder ID: FOLDER 072) Memoranda, Patent Publications, Issued Patents by Friedman, 1938-1955
Document ID Document Title Filename
A104946 Cover Note to William Friedman Re Patents; Note from CIA to William Friedman 41715649075495.pdf
A104949 Cover Note from William Friedman Re Patents; Note from William Friedman to CIA 41715519075482.pdf
A104953 Difference Between William Friedman's Patents and Durkee's Patent; Note to William Friedman from NSA R&D 41715539075484.pdf
A104957 Note from William Friedman Requesting Return of Patents; Note from William Friedman to CIA 41715669075497.pdf
A104962 William Friedman's Patents No. 1,530,660 & 1,694,874 Vs Durkee's Patent; Note from Friedman to NSA R&D 41715689075499.pdf
A104966 Dualex Telegraph Equipment and Patents Issued; Internal NSA Note to William Friedman 41714539075384.pdf
A104970 Dualex Corporation, A Patent Holding Company; Memo from Special Assistant to Chief, R&D to William Friedman 41715709075501.pdf
A104975 U.S. Patent No. 2,552,548 for Facsimile Enciphering System; Letter from William Friedman to Vice President, Western Union Telegraph Company 41716079075538.pdf
A4161577 Cryptographic Apparatus 41706009074532.pdf
A4161578 W.F. Friedman Printing Telegraph System 41706059074536.pdf
A4161579 W.F. Friedman Facsimile Enciphering System 41706129074544.pdf
(Folder ID: FOLDER 073) Correspondence, Historical Reports, Related to Patent Application 443,320, 1949-1951
Document ID Document Title Filename
A104698 Brief History of Steps and Actions Taken Leading to Submission of Private Bill S.2283 41713349075266.pdf
A104704 William F. Friedman-Civilian Employee of Army Security Agency 41713769075307.pdf
A104708 Note to Chief, ASA with Draft of Proposed 3d Endorsement 41713699075301.pdf
A104710 First and Second Endorsements Regarding Friedman's Letter of 8 December 1947 41714059075337.pdf
A104716 Return of Papers In Re Patent Application Serial No. 443,320 41714449075376.pdf
A104721 Patent Application Serial No. 443,320 41714009075331.pdf
A104726 Release of Patent Application Serial No. 443,320 41714489075379.pdf
A104736 Release of Patent Application Serial No. 443, 320 41714559075386.pdf
A104739 Release of Cryptographic Principles 41714919075422.pdf
A104754 Patent Office Secrecy Orders 41714969075427.pdf
A104760 Memorandum to General Corderman Regarding Declassification of Cryptographic Equipment 41713559075286.pdf
A104765 Declassification of Patent Application Ser. No. 443,320; Memo from Signal Corps Chief, Plans & Operations Staff Re Crypto Inventions 41713839075314.pdf
A104786 Declassification Patent Application Serial No. 443,320 41715019075432.pdf
A104812 Return of Papers In the Case of Patent Application Serial No. 443,320; William Friedman Comments on Papers In the Case of Patent Application Serial No. 443,320 41715049075434.pdf
A104821 Statements of Federal Service for William Friedman and Frank B. Rowlett; Summary of Personnel Actions, Positions, Grades, Salaries, Etc 41714109075341.pdf
A104825 William F. Friedman-Civilian Employee of Army Security Agency 41714749075406.pdf
A4161580 H.R. 639 41706189074550.pdf
A4161581 H.R. 286 41706219074552.pdf
A4161582 H.R. 2068 41706239074555.pdf
A4161583 S. 116 41706259074557.pdf
(Folder ID: FOLDER 074) Memoranda, Policies, Patent Publications, Related to US Government Policy on Patents and Release of Technical Information by Government Employees, 1936-1951 (2 Folders)
Document ID Document Title Filename
A104568 United States-United Kingdom Patent Agreements 41712169075146.pdf
A104576 Signal Corps Clearance of Release of Technical Information to Foreign Nationals 41712219075152.pdf
A104588 Policy for BRUSA COMSEC Conference In Regard to Conditions of Release of Information; Draft Policy Statements 41712249075155.pdf
A104591 Policy for BRUSA COMSEC Conference In Regard to Conditions of Release of Information; Draft of Proposed Policy Statement 41713459075276.pdf
A104601 United States-United Kingdom Security Agreement 41712869075217.pdf
A104605 Proposed Legislation "To Provide For The Withholding Of Certain Patents That Might Be Detrimental To The National Security, And For Other Purposes 41713639075294.pdf
A104609 Secrecy Orders on Patent Applications 41713879075319.pdf
A104610 Interpretations and Opinions No. 4 of the Government Patents Board 41712309075162.pdf
A104613 Government Incentives, Awards and Rewards Program Pamphlet 41714149075345.pdf
A104618 Part II of Final Report of Armed Services Patent Policy Review Board 41712749075206.pdf
A104621 Comments on Proposed AFSA Regulation on Patents 41712389075169.pdf
A104680 Draft of Proposed Legislation Regarding Patents 41712559075185.pdf
A104681 Draft of Proposed AFSA Regulation Regarding Government Patents Board 41712289075159.pdf
A104682 Executive Order 10096 41712369075166.pdf
A104683 Executive Order 10096 41713409075271.pdf
A104684 Query Regarding Effects of Executive Order 10096 on AFSA 41712349075165.pdf
A104686 Note from Friedman to Captain Wenger Regarding Executive Orders 9865 and 10096 41712629075193.pdf
A104687 Policy Relating to Employee-Made Inventions 41714179075348.pdf
A104692 Correspondence Between Friedman, Chief ASA, and Patents Section, ASA R&D Division Regarding Government Patent Policy 41712929075223.pdf
A104693 Army Service Forces, Office of the Chief Signal Officer, Patent Memorandum No. 5 41714239075354.pdf
A104694 Signal Corps General Development Laboratory, Patent Memorandum No. 4 41714339075364.pdf
A104695 Signal Corps General Development Laboratory, Patent Memorandum No. 3 41712699075200.pdf
A104696 Signal Corps Patent Memorandum No. 1 41712589075189.pdf
A104697 Memorandum Concerning Executive Order 10096 41714369075367.pdf
A4161584 S. 1827 41706289074560.pdf
A4161585 A Proposed Government Incentives, Awards and Rewards Program 41706309074562.pdf
A4161586 H.R. 7316-S 2840 41706329074564.pdf
A4161587 H.R. 7316 41706339074565.pdf
A4161588 Patents-Inventions, Patents and Patent Infringement Claims 41706349074566.pdf
A4161589 Palmer Is Sworn In AS Patents Board Head 41706359074567.pdf
A4161590 the National Archives of the United States Federal Register Volume 12 Number 118 Title 3-the President Executive Order 9865 41706369074568.pdf
A4161592 Federal Register, Volume 15, Number 16, Executive Order 10096 41706379074569.pdf
A4161593 Public Law 256-82d Congress Chapter 4-2d Session H.R. 4687 41706389074570.pdf
A4161595 Army Regulations No. 825-20 41706399074571.pdf
A4161596 Bulletin No. 10 41706409074572.pdf
A4161597 Rules and Regulations 41706459074577.pdf
A4161598 Procedural Instructions for Submitting the Reports Specified In Administrative Order No. 5 41706499074581.pdf
A4161599 Foreign Patent Protection Procedure 41706559074588.pdf
A4161600 Interim Rules and Regulations for the Administration of A Uniform Patent Policy for the Government 41706609074593.pdf
A4161601 Rules and Regulations for the Administration of A Uniform Patent Policy with Respect to the Domestic Rights In Inventions Made by Government Employees 41706709074604.pdf
A4161603 Federal Register Volume 16 Number 86 41706789074610.pdf
A4161605 Executive Order 10096 41706809074612.pdf
(Folder ID: FOLDER 078) Randomizer Patent Papers SISDE-23, Serial No. 36,868, US Patent No. 2,166,137, Electric Switching Mechanism, Friedman and Rowlett (18 July 1939), 1926-1939
Document ID Document Title Filename
A67788 Randomizer Patent Papers; Electrical Switching Mechanism; Patent Application No. 36,868; SISDE 23 41707929074724.pdf
A67789 US Patent Application, Electrical Switching Mechanism, Serial No. 36,868, 21 April 1939; SISDE 23 41707949074726.pdf
A67790 US Patent Office Documentation of Patent 2,166,137, Electrical Switching Mechanism, 19 August 1935; SISDE 23 41707969074728.pdf
A67791 Notification of Approval for Patent Application Serial No. 36,868, 19 April 1939; SISDE 23 41707979074729.pdf
A67792 Patent Application, Ser. No. 36,868, Electrical Switching Mechanism, 12 April 1939; SISDE 23 41707999074731.pdf
A67793 Notice of Claim Rejection Re Patent Application No. 36,868; SISDE 23 41708019074733.pdf
A67794 Response to US Patent Office Action Dated April 18 1938 Re Patent Application No. 36,868; SISDE 23 41708039074735.pdf
A67795 US Patent Office Documentation of Patent No. 1,643,852, an Electric Time-Element Device, 12 April 1924; SISDE 23 41708049074736.pdf
A67796 Patent Application, Ser. No. 36,868, Electrical Switching Mechanism, 12 May 1938; SISDE 23 41708059074737.pdf
A67797 US Patent Office Documentation for Patent Serial No. 1,863,658, A Switch Mechanism for Signal and Other Electrical Circuits, 23 October 1930; SISDE 23 41708069074738.pdf
A67798 Response to Amendment of December 1, 1937 Re Patent Application No. 36,868, 18 April 1938; SISDE 23 41708089074740.pdf
A67799 Examiners Rejection of Certain Claims Re Patent Application No. 36,868; SISDE 23 41708109074742.pdf
A67800 US Patent Office Documentation of Patent No. 1,600,753, A Method of Controlling Elevators, 12 April 1924; SISDE 23 41708159074748.pdf
A67801 US Patent Office Documentation of Patent No. 1,699,122, A Control System, 21 January 1927; SISDE 23 41708289074762.pdf
A67802 Letter from Friedman to IBM Re Discussions on A Randomizer Attachment; SISDE 23 41708419074773.pdf
A67803 Response to US Patent Office Action Dated June 9, 1937, 1 December 1937; SISDE 23 41708569074789.pdf
A67804 Department of Commerce Response to Amendment of Patent No. 36,868, 7 June 1937; SISDE 23 41708699074803.pdf
A67805 Department of Commerce Response to Patent Amendments Filed May 22 and June 11, 1936 Re Patent Application No. 36,868; SISDE 23 41708849074817.pdf
A67806 Commerce Department Notice of Incomplete Application Re Serial No. 36,868, 23 November 1935; SISDE 23 41708919074823.pdf
A67807 Comments Regarding A Friction Drive; SISDE 23 41708939074825.pdf
A67808 Record of Military Invention, A System for Randomizing the Relations of Electrical Circuits, 19 June 1935; SISDE 23 41708949074826.pdf
A67809 Request for Information Regarding Friedman Work on an Invention; SISDE 23 41708979074828.pdf
A67810 Supplement to Amendment Dated May 22 1936 Re Patent Application Serial No. 36,868, 11 June 1936; SISDE 23 41708989074829.pdf
A67811 Description of Friedman Invention, an Electrical Switching Mechanism; SISDE 23 41709009074832.pdf
A67815 Patent Application, Ser. No. 36,868 Electrical Switching Mechanism, 10 November 1937; SISDE 23 41709019074833.pdf
A67816 Response to Patent Office Action Dated August 21, 1936; SISDE 23 41709029074834.pdf
A67817 Patent Application, Ser. No. 36,868, Electrical Switching Mechanism, 29 September 1936; SISDE 23 41709039074835.pdf
A67818 Response to Patent Office Action Dated November 20, 1935; SISDE 23 41709049074837.pdf
A67820 Description and Objective of Invention, Patent Application No. 36,868; SISDE 23 41709079074839.pdf
A67821 New Patent Application, System for Randomizing the Relations of Electrical Circuits, 6 August 1935; SISDE 23 41709099074841.pdf
A67824 Approval to Enter Into Negotiations for Possible Sale of Invention; SISDE 23 41709109074842.pdf
A67826 Notification of Invention-Attachment to Electrical Counting Sorter; SISDE 23 41709119074843.pdf
A67827 US Patent Office Documentation of Patent No. 2,005,890; A Motor Control Unit, 13 November 1929; SISDE 23 41709129074844.pdf
A67829 US Patent Office Documentation for Invention No. 1,944,692, 6 January 1928; SISDE 23 41709139074845.pdf
A67831 US Patent Office Documentation of Patent No. 1,902,013, 16 April 1925; SISDE 23 41709149074846.pdf
A67832 US Patent Office Documentation of Patent No. 1,930,262; A Sorting Machine; SISDE 23 41709169074849.pdf
A67833 Republic of France Documentation of Invention No. 522,443, 26 July 1920; SISDE 23 41709189074851.pdf
A67842 US Patent Office Documentation of French National Invention; Patent No. 1,184,264, 23 May 1916; SISDE 23 41709209074852.pdf
A67845 US Patent Office Documentation of Patent No. 1,732,488; A Light Flashing System; SISDE 23 41709229074853.pdf
(Folder ID: FOLDER 079) Signal Intelligence Service (SIS) Systems, Randomizing Device for Electric Card Sorter, SISDE-23, Serial No. 36,868, US Patent No. 2,166,137, Friedman and Rowlett (18 July 1939), 1935-1939
Document ID Document Title Filename
A67694 Randomizer for Electric Card Sorter (SISDE-23), Friedman and Rowlett; Patent No. 2,166,137; SISDE-23 41707499074681.pdf
A67704 Amendment to Patent Application Serial No. 36,868; SISDE 23 41707529074684.pdf
A67705 Amendment to Patent Application # 36,868 41707579074689.pdf
A67710 Department of Commerce Response to Amendment of February 1 1937 Re Serial # 36,868; SISDE 23 41707599074691.pdf
A67712 Friedman Patent Application-Department of Commerce Response to Amendments of May 22 and June 11 1936; SISDE 23 41707629074694.pdf
A67715 Department of Commerce Re Application # 36,868; SISDE 23 41707649074696.pdf
A67717 Friedman Memo Comments on A Mr Boardman's Unspecified Device; SISDE 23 41707699074700.pdf
A67719 Friedman Patent Application-Record of Military Invention 41707719074703.pdf
A67720 Friedman Patent Application-Supplement to Amendment Dated May 22 1936 Regarding Serial No. 36,868; SISDE 23 41707739074705.pdf
A67722 Explanation of Electrical Switching Mechanism Invention and Purpose; SISDE 23 41707769074707.pdf
A67728 Patent Application Ser. No. 36,868 Electrical Switching Mechanism; SISDE 23 41707779074709.pdf
A67729 Amendment to Patent Application 36,868; SISDE 23 41707799074711.pdf
A67730 Patent Application, Ser. No. 36,868 Electrical Switching Mechanism; SISDE 23 41707819074713.pdf
A67732 Response to Patent Office Action Dated 23 November 1935; Change of Title of Invention; SISDE 23 41707829074714.pdf
A67734 Description of and Objective of A Randomizer Invention; SISDE 23 41707849074716.pdf
A67736 New Patent Application, System for Randomizing the Relations of Electrical Circuits 41707869074718.pdf
A67786 Letter Granting Permission for Friedman/Rowlett to Enter Into Negotiations with Industrial Organizations for Sale of Invention, 21 August 1935; SISDE 23 41707889074720.pdf
A67787 Notification of Invention of an Attachment to the Electrical Counting Sorter; SISDE 23 41707909074722.pdf
(Folder ID: FOLDER 080) Correspondence, License, Patent Records, Notes, Diagrams, SISDE-25 Authentication System for Banks, 1944-1950
Document ID Document Title Filename
A67608 Friedman Invention-SISDE-25-Authenticating Device for Banks, January 1944; Patent Serial No. 551172 41702619074194.pdf
A67612 Authenticating Devices of William F. Friedman, 21 June 1944; SISDE 25 41702629074195.pdf
A67614 Electrical System-Inventor William F. Friedman, 1 August 1944; SISDE 25 41702639074196.pdf
A67618 Authenticating Devices of William F. Friedman, 19 July 1944 41702649074197.pdf
A67620 Invention of Authenticating Device for Commercial Usage, 8 June 1944; SISDE 25 41708429074776.pdf
A67622 Cover Letter with Application for A Patent, 17 February 1944; SISDE 25 41706869074618.pdf
A67625 Request for Permission to Enter Into Negotiations with Prospective Purchaser of Friedman Invention; SISDE 25 41706909074622.pdf
A67629 Application for Patent # 551,172, Authenticating Device, 16 May 1950; SISDE 25 41706949074626.pdf
A67632 Patent Office Response to Friedman Re Patent # 551,172, 24 April 1950; SISDE 25 41706989074630.pdf
A67634 Department of Commerce Report of Examination of Patent Application # 551,172, 25 August 1944; SISDE 25 41707029074634.pdf
A67636 US Patent Office Response to Patent Application # 551,172, 28 October 1949; SISDE 25 41707069074638.pdf
A67638 Response to Amendment of September 2, 1948 to Patent Serial No. 551172, 25 August 1944 41707099074641.pdf
A67640 Response to Friedman Request to Revive Action on Patent # 551,172, 27 September 1948 41707129074644.pdf
A67644 Abandonment of Application to Revive Patent # 551,172, 22 September 1948 41707139074645.pdf
A67647 Friedman Appeal to US Patent Office Regarding Abandonment on Patent No. 551,172, 18 August 1948; SISDE 25 41707169074648.pdf
A67650 Friedman-Revocation of Power of Attorney and Power of Attorney, 25 August 1944; SISDE 25 41707189074650.pdf
A67652 Reclama to US Patent Office Memo Dated 3 February 1945 Re Patent # 551,172, 28 July 1945; SISDE 25 41707219074653.pdf
A67655 Findings of US Commerce Department Examiner Re Friedman Patent # 551,172, 25 August 1944; SISDE 25 41707249074656.pdf
A67657 Friedman-- Petition to Receive Patent on an Authenticating Device, 23 August 1944; SISDE 25 41707279074659.pdf
A67660 Friedman-- Granting of License for Invention to the US, 23 August 1944; SISDE 25 41707319074663.pdf
A67662 Friedman-- Assignment of Rights to Invention to the US Government for One Dollar, 23 August 1944; SISDE 25 41707359074667.pdf
A67670 Friedman-- Patent Record and Description of an Authenticating Device, 12 June 1944; SISDE 25 41707379074671.pdf
A67673 Friedman Invents Another Authenticating Device, 8 June 1944; SISDE 25 41707439074675.pdf
A67685 Record of Details of Agreement Between Friedman and Leo Rosen with Regard to Development and Commercial Exploitation of A Device for Use Among Banks and Brokerage Firms, 22 October 1943; SISDE 25 41707469074678.pdf
A67995 Handwritten Notes and Diagram of an Unspecified Device; SISDE 25 41709309074862.pdf
(Folder ID: FOLDER 081) Diagram, SISDE-26, Cryptographic Machine, 1927
Document ID Document Title Filename
A67606 Friedman Invention, SISDE-26, 8 February 1927 41702609074193.pdf
(Folder ID: FOLDER 083) List of SISDE Numbers for Cipher Devices, Machines, Etc. Including Type Number, Description, Inventor, US Patent Application Serial No., Date, US Patent No., and Date of Issue, 1942
Document ID Document Title Filename
A67598 Index of Various Patents Submitted by Mr Friedman, January 1942; SISDE Number Index for Cipher Devices, and Machines 41702589074191.pdf
(Folder ID: FOLDER 084) Memoranda, License, Descriptions, Diagrams, M-138 Patent Application, SISDE 15 & 16, Application No. 300,212, US Patent No. 2,395,863, Issued 5 March 1946, 1929-1946
Document ID Document Title Filename
A4161606 Department of Commerce Letter to William F. Friedman 41706829074614.pdf
A67538 Personal Folder on M-138 Patent Application; SISDE-15 & 16, 5 March 1946; Application # 300212; Patent No. 2395863 41702369074169.pdf
A67539 Cryptographic Material Issued to Foreign Nations, January 1946; Converter M-228 and Alphabet Strips 41702379074170.pdf
A67540 Memo: Additional Information Regarding Cryptographic Material Issued to Foreign Nations, January 1946; Converter M-228 41702389074171.pdf
A67543 Patent Application of William P. Friedman, Serial No. 300, 212, Filed 19 October 1939, for Cryptographic Devices; Patent No. 2395863 41702399074172.pdf
A67544 Application for Patent Serial No. 300,212-W.F. Friedman, 17 December 1945 41702409074173.pdf
A67545 Release of Patent Application Serial No. 300,212, 19 October 1939, 18 September 1945 41702419074174.pdf
A67547 Notification That Patent Application Contains Information Detrimental to Public Defense 41702429074175.pdf
A67548 Patent Application #300212 on A Cryptographic Device, 8 July 1940 41702439074176.pdf
A67549 Application for Letters Patent of the United States for A Cryptographic Device, 16 October 1939 41702449074177.pdf
A67550 Amendment Responsive to Patent Office Action Dated November 9 1939, 7 May 1940; Serial No. 300212 41702459074178.pdf
A67552 Patent Application, Ser. No. 300,212, Cryptographic Device (M-138a) 41702469074179.pdf
A67553 Notice of Application Examination Patent Ser. No. 300,212 41702479074180.pdf
A67554 Objective of Cryptographic Invention, 1 January 1939; SISDE 15 and 16 41702489074181.pdf
A67556 Inventor Claims for Cryptographic Invention, Patent No. 300,212, 1 January 1939; SISDE 15 and 16 41702499074182.pdf
A67557 Memorandum Re Cipher Device M-138, Sectionalized Type 41702509074183.pdf
A67558 Memorandum Re Cipher Device, M-138 41702519074184.pdf
A67560 Revised Draft of Specification and Drawings Covering Hand-Operated Cryptographic Device; SISDE 15 and 16 41702529074185.pdf
A67561 Memorandum on Cipher Device Type M-138; SISDE 15 and 16 41702539074186.pdf
A67563 Memorandum on Cipher Device Type M-138, 13 March 1936; SISDE 15 and 16 41702549074187.pdf
A67566 Request for Information Regarding Mr. Friedman's Employment Regarding Inventions; SISDE 15 and 16 41702559074188.pdf
A67592 Draft Specifications for Basis of Patent Application on Cipher Device Type M-138; SISDE 15 and 16 41702569074189.pdf
A67596 Proposed Change In the Construction of Cipher Device M94, 13 July 1929; SISDE 15 and 16 41702579074190.pdf
(Folder ID: FOLDER 085) Correspondence, Description, Diagrams, SISDE-20, Cipher System and Apparatus for Plural-Unit-Code Telegraph Printer, 1936-1939
Document ID Document Title Filename
A67531 Friedman Invention; Cipher System for Teletype and Radiotype (SISDE-20), 11 January 1944 41702329074165.pdf
A67532 Department of State Cover Letter Enclosing an IBM Proposal for A Cryptographic System; SISDE 20 41702339074166.pdf
A67533 Cryptographic and Operating Advantages for Proposed Machine, 1 January 1944; SISDE 20 41702349074167.pdf
A67534 Invention of A Cipher System and Apparatus for Plural-Unit-Code Telegraph Printer, 14 June 1936; SISDE 20 41702359074168.pdf
(Folder ID: FOLDER 086) Description, Notes, and Diagram for Invention of Simple Printing Mechanism for Baudot Code System, SISDE-22, 1935
Document ID Document Title Filename
A67530 Friedman Invention: Simple Printing Mechanism for Baudot Code System, SISDE-22 41702319074164.pdf
(Folder ID: FOLDER 087) Working Notes and Diagrams for Invention of Means for Controlling Displacements of Cipher Wheels, Hebern Type of Cryptograph, SISDE-21, 27 March 1935
Document ID Document Title Filename
A67515 Friedman Sketches-Invention: Means for Controlling Displacement of Cipher Wheels, Hebern Type of Cryptograph, SISDE-21 41702309074163.pdf
(Folder ID: FOLDER 088) Correspondence, Description, Diagrams, SIS Systems SISDE-11-Cipher Wheel Commuters, Internally Controlled, Serial No. 70,412, Formerly Known AS M-161, 1935-1947
Document ID Document Title Filename
A4161609 Cryptograph Description 41706849074616.pdf
A67440 Improvements In Cryptographs; Patent Applied for, Serial No. 70412, March 23 1936; SISDE #11 41701999074131.pdf
A67452 Draft Specifications and Drawings of A New Means of Controlling Cryptomachines; SISDE 11 41702009074133.pdf
A67454 Patent Office Invocation of the "Three Year Rule" Regarding Friedman Application 41702029074135.pdf
A67457 War Department Letter Acknowledging Request for Secrecy of Patent No. 70,412, 15 July 1947 41702039074136.pdf
A67459 Application for Secrecy Order for Patent No. 70, 412, 6 June 1947 41702059074138.pdf
A67460 Copy of Secrecy Order for Patent No. 70,412 Issued by Commerce Department, 20 May 1947; SIGABA M-134-C 41702069074139.pdf
A67462 Invention of Mechanico-Electrical Control of Cipher Wheels for Small Cryptograp 41702079074140.pdf
A67464 Basic Cryptographic Principle of Navy Machine, 1 January 1947; Patent No. 74012 41702089074141.pdf
A67467 Amendments to Patent No. 70,412, 22 October 1942 41702099074142.pdf
A67468 Patent Application, Ser. No. 70,412, Improvement In Cryptographs, 21 September 1939; SISDE 11 41702109074143.pdf
A67470 Application of Wm. F. Friedman and Frank B. Rowlett-SN 70,412, Filed March 23, 1936, Cryptographs-Amendment 41702119074144.pdf
A67472 Power of Attorney In Re Application of Friedman and Rowlett, Serial No. 70,412, 23 March 1936 41702129074145.pdf
A67473 Requirement for Division and Election Re Patent No. 70412 Is Withdrawn, 23 March 1936 41702139074146.pdf
A67476 Request for Continuing of Patent No. 70,412 for A Period of 3 Years 41702149074147.pdf
A67478 Approval for Continuing of Patent Application No. 70,412, 3 May 1939 41702159074148.pdf
A67484 War Department Request for Continuing of Patent No. 70, 412 41702179074150.pdf
A67486 Improvement In Cryptographs, Patent Application Ser. No. 70,412, 29 September 1936 41702189074151.pdf
A67489 Department of Commerce Rejection of Claims Regarding Patent No. 70412, 23 March 1936 41702209074153.pdf
A67498 Patent Application No. 70,412 Placed on File Within Patent Section, Signal Corps, 26 March 1936 41702219074154.pdf
A67500 Improvement In Cryptographs New Patent Application, 12 March 1936 41702229074155.pdf
A67502 Record of Military Invention, Friedman/Rowlett, 31 August 1935 41702239074156.pdf
A67504 Description of Invention Related to Cryptographs, 1 January 1935; Patent No. 70412 Application 41702249074157.pdf
A67507 Description of Cryptograph Device Invented by Friedman/Rowlett; Patent No. 70412 41702259074158.pdf
A67508 Diagrams and Changes to Patent Application, Friedman/Rowlett, 31 August 1935; Patent No. 70412 41702269074159.pdf
A67509 Object of Friedman/Rowlett Cryptograhic Machine, 29 June 1935; Patent No. 70412 41702279074160.pdf
A67512 Principles of Cryptographic Invention of Friedman/Rowlett, 15 February 1936; Patent No. 70412 41702289074161.pdf
A67513 Record of Facts In Connection with Friedman/Rowlett Cryptologic Invention, 31 August 1935; Patent No. 70412 41702299074162.pdf
(Folder ID: FOLDER 089) Notes and Diagrams, Subjects Include Printing Telegraphy, Protecting Crytpoteleprinter Transmissions, Electric Cryptograph, Special Modifications In M-161 for A Smaller Cryptograph, 1935-1943
Document ID Document Title Filename
A67398 Diagram of OCSIGO, 15 March 1940 41701679074100.pdf
A67399 Invention of an Electronic Translator or Combiner for Printing Telegraphy and Other Purposes 41701699074102.pdf
A67400 Invention of Mechanical Wheel Control for A Small Cryptograph, 6 September 1935 41701719074104.pdf
A67402 A New Means and Method for Protecting Cryptoteleprinter Transmissions, 25 February 1947 41701739074106.pdf
A67404 Invention of an Electronic Cryptograph 41701759074108.pdf
A67406 Diagram of an Unspecified Crypto Device, 1 October 1937 41701769074109.pdf
A67407 Diagram and Notes of an Unspecified Crypto Device 41701799074112.pdf
A67410 Wiring Diagram for an Unspecified Crypto Device 41701829074115.pdf
A67412 Special Modifications In M-161 for A Smaller Cryptograph, 20 April 1941 41701849074117.pdf
A67427 Signal Corps Patent Board Meeting No. 2; Converters M-134-T1 and M-134-T2 Improvements Discussed 41701869074119.pdf
A67429 Diagram of Wheel Control Unit, Crypto Machine M-161 41701899074122.pdf
A67432 Preliminary Proposals for Converter Type M-161 41701919074124.pdf
A67433 Printing Mechanisms for M-161 41701939074126.pdf
A67435 Teletype Enciphering Schematic, 19 July 1943 41701959074128.pdf
A67436 Military Characteristics of A Cryptographic Machine for Use In Message Centers of the Larger Fixed and Semi-Fixed Headquarters 41701979074130.pdf
(Folder ID: FOLDER 092) Diagram, Means and Methods of Controlling Intermittent Action of the Second of Two Key-Tape Transmitters, At&t System, SISDE-19, 26 March 1935
Document ID Document Title Filename
A67333 Invention: Means and Method of Controlling Intermittent Action of 2d of Two Keytape Transmitters, at & T System (SISDE-19) 41701019074034.pdf
(Folder ID: FOLDER 096) US and UK Patent Publications, 1912-1936
Document ID Document Title Filename
A70383 Patent Publications: Counting/Calculating Device; Educational Device 41709619074892.pdf
A70385 Improvements In Devices for Cyphering and Decyphering Messages and the Like; Frenchman, Georges Lugagne, Applies for British Patent of His Invention 41709639074895.pdf
A70407 Patent No. 1,311,457 Cipher Apparatus by Luigi Nicoletti of Rome Italy 41709679074897.pdf
A70410 Patent No. 1,956,384 Pocket Cryptographic Apparatus by Albert Gentet, Paris, France 41709699074901.pdf
A70411 Patent No. 1,667,780 Apparatus for Coding & Decoding Messages by Joseph Grassi of London, England 41709729074904.pdf
A70431 Patent No. 1,826,034 Device for Teaching Arithmetic by R M Williamson 41709759074907.pdf
A70433 Patent No. 2,395,863 Cryptographic Device by W F Friedman 41709789074910.pdf
A70438 Patents 1,471,437 (Oct 23, 1923) and 832,871(oct 9, 1906) 41709809074912.pdf
A71811 Two British Patent Documents for Crypto Devices 41711619075092.pdf
(Folder ID: FOLDER 098) Diagrams, Descriptions, Patent Application Files, SISDE-24 Stylus Operated Keyboard for A Small Portable Cryptograph (Converter M-325), 1944-1953
Document ID Document Title Filename
A70340 Friedman Correspondence to the Department of Commerce Regarding His Patent Application for the M-325 41709549074888.pdf
(Folder ID: FOLDER 099) Photographs, Drawings, and Photostated Pictures of the M-325, 1935
Document ID Document Title Filename
A70322 Coding Device: Keyboard and Components, M-325 41709509074883.pdf
(Folder ID: FOLDER 100) Correspondence, Contract, Contract Bids, Photographs, and Diagrams, Supply and Installation of A Complete Electric Burglar Alarm System In Army Munitions Building, Washington, D.C., 1940
Document ID Document Title Filename
A4161638 Circuits and Operation of E.P.C. Local Burglar Alarm System AS Proposed for United States War Department Signal Groups 41709499074881.pdf
A71748 Locator Card: Cdr L. F. Safford, USN 41711589075089.pdf
A71995 Army Burglar Alarm System (Invitation No. R-4875/Contract No. W1049) 41711799075111.pdf
(Folder ID: FOLDER 103) Memoranda, Drawings, and Cryptograph Specifications Description, SISDE-6 SIS (Signal Intelligence Service) System-Message Authentication, 1933-1935
Document ID Document Title Filename
A70302 Memo Re Patent Regulations and Approval 41709279074859.pdf
A70304 Patent Application: Cipher Device 41709329074865.pdf
A70313 Patent Application: Cipher Device-- Specifications, Claims, Drawings 41709359074868.pdf
(Folder ID: FOLDER 111) Patent File, Navy Electric Ciphering Machines (ECM), 1924-1945
Document ID Document Title Filename
A60490 American Patents for "Enigma" Ciphering Machines 41741259078049.pdf
A60492 Contributions of the Signal Corps; Rowlett-Friedman Contributions to Hcm Cipher Machine 41741119078035.pdf
A60496 Memorandum on Hebern Electric Code Machine 41741169078040.pdf
A60499 Friedman Research Into A Novel Mechanico-Electrical Cipher Machine 41741129078036.pdf
A60500 Distribution of Converter M-134 (SIGHIC) & M-134-A (SIGMYC) 41741219078045.pdf
A60503 Control Circuits for Electric Coding Machines; Patent Application Rejection 41741239078047.pdf
A60505 Receipt of Classified Material 41741149078038.pdf
A60507 Patent Application Serial No. 568,368 for Control Circuits for Electric Coding Machines 41741349078058.pdf
A60509 Control Circuits for Electric Coding Machines; Patent Rights Transfer 41741319078055.pdf
A60513 Application for Letters Patent on A Control Circuits for Electric Coding Machines 41741309078054.pdf
A60515 Secrecy Orders for Control Circuits for Electric Coding Machines 41741249078048.pdf
A60531 Patent Situation with Regard Thereto Electric Ciphering Machines 41741269078050.pdf
A60538 Patent Situation with Regard to Electric Ciphering Machines 41741279078051.pdf
A60545 Request for Copy of Court Records on Patent Application No. 232,995 41741289078052.pdf
A60555 Summary of Opinion In Re: Electric Ciphering Machines-Patent Situation 41741339078057.pdf
A60566 Patent Situation with Regard to Electric Ciphering Machines 41741359078059.pdf
A60595 Electric Ciphering Machines; Request for Opinion Concerning Patent Features 41741329078056.pdf
A61596 Proposals for Modification of Hebern Electric Code Machine 41743819078302.pdf
A61601 Invention Application-Control Circuits for Electric Coding Machines 41743859078306.pdf
A61605 Patent Application for ECM Mark Ll 41743889078309.pdf
(Folder ID: FOLDER 114) Memoranda, Electronic Code Machine (ECM) Hebern (Including Negative Images of the Machine), 1924
Document ID Document Title Filename
A273765 Study of A Cipher Machine Being Considered for Use In the Naval Service 41763509080264.pdf
A273766 Memorandum on Hebern Electric Code Machine 41763539080267.pdf
A273768 Record of Inventions Photo Notes Kept by Non Seiler 41763569080270.pdf
A4161641 Negatives of Early Development Models ECM March 1 & 2 41709589074890.pdf
(Folder ID: FOLDER 115) Memoranda and Working Notes, List of Patents on Electro-Mechanical Cipher Machines Pertinent to the Hebern Case, 1949
Document ID Document Title Filename
A2436316 Patents on Electro-Mechanical Cipher Machines 41772939081202.pdf
A273714 List of Patents Relating to the Hebern Case 41763499080263.pdf
A273720 Notes on Patents Relating to the Hebern Case 41763519080265.pdf
A273725 Notes on Patents (Relating to the Hebern Case) 41763599080273.pdf
A273728 Notes on Patents (Relating to the Hebern Case) 41763189080232.pdf
A273732 Notes on Patents (Relating to the Hebern Case) 41763529080266.pdf
(Folder ID: FOLDER 116) Memoranda, Litigation Files, Patent Files, Diagrams, Newspaper Clippings, Relating to the Hebern Patent Infringement Claim, 1922-1949
Document ID Document Title Filename
A2436312 Hebern Preliminary Report 41772819081190.pdf
A2436314 Hebern Infringement Claim 41772919081200.pdf
A272983 Ellie L. Hebern, Et AL Vs. the United States In the Court of Claims No. 213-53 41762889080202.pdf
A272987 Action for Compensation from the United States for Infringement of Patent and for Other Relief-U.S. Court of Claims No. 213-53 41763009080214.pdf
A272995 Copy of Czeslaw Rymtowtt-Prince, of Geneva, Switzerland-Type-Writing Machine-United States Patent Office 41762869080200.pdf
A272998 'AS Discussed (Re Hebern File)-Note 41762969080210.pdf
A273002 Re Infringement Claim of Hebern Code, Inc., Et AL 41762989080212.pdf
A273007 Securitas Cipher Machine 41763139080227.pdf
A273008 Koch Transposition-Substitution Cipher Machine 41763119080225.pdf
A273618 Hebern Electric Code Machine 41762849080198.pdf
A273619 Hebern "Midget Coder" 41763219080235.pdf
A273620 Hebern "Super Code" Machines 41763309080244.pdf
A273626 Infringement Claims of Edward H. Hebern and Hebern Code, Incorporated, Et AL, AS They Relate to CCM Coding Device 41762939080207.pdf
A273635 Austrian Patent 62,926 (German Language) 41763159080229.pdf
A273646 Translation of Austrian Patent 62,927 (Includes German Language Version) 41763239080238.pdf
A273658 C11, American Patents for "Enigma" Ciphering Machines 41763479080261.pdf
A273661 Hebern Infringement Claim Notes 41763439080257.pdf
A273670 Beyer Patent Dates (U.S.1, 414, 496) Note 41763459080259.pdf
A273671 Early Photos of Cipher Machines with German Language Captions and A.P. Wirephoto of E.H. Hebern 41763279080241.pdf
A273674 Cryptograms-Submitted to Brigman 41763399080253.pdf
A273681 Eleven Million Codes Are Made by Single Electrical Machine-(Newspaper Articles) 41763409080254.pdf
A273696 William F. Friedman Request for Patent Information Re U.S. Patent No. 1502,376 to Damm 41763419080255.pdf
A273697 Infringement Claim of Edward H. Hebern and Hebern Code, Inc 41763349080248.pdf
A273698 Infringement Claim of Edward H. Hebern and Hebern Code, Inc 41766729080583.pdf
A273699 Infringement Claim of Edward H. Hebern and Hebern Code, Inc 41763329080246.pdf
A273701 Infringement Claim of Edward H. Hebern and Hebern Code, Inc 41763369080250.pdf
A273704 History of Invention and Development of the Mark II ECM-Op-2-- S-5 41766759080586.pdf
A273708 Code Device Inventor Sues for $50,000,000 (Ap News) 41763549080268.pdf
A4161642 Request for Clearance 41709659074899.pdf
(Folder ID: FOLDER 118) Instruction Book for Converter M-134-T2 and Associated Electrical Typewriter (Including Photographs and Diagrams), 1936
Document ID Document Title Filename
A272976 Instruction Book for Converter M-134-T2 and Associated Electrical Typewriter 41762829080195.pdf
(Folder ID: FOLDER 119) Friedman's Patent File (Including Photographs and Diagrams) on Converter M-134-T2, US Patent Serial No. 682,096, SISDE-7, 1933-1952
Document ID Document Title Filename
A272545 Personal File on Converter M-134 (T2) U.S. Pat Serial No 682,096 (SISDE-7); Re: Application for Patent of William F. Friedman 41762639080177.pdf
A272553 William F. Friedman Memo-"Record Of Inventions" Kept by Don Seiler 41761819080095.pdf
A272562 William F. Friedman Patent Application 682096-Responsive to Amendment of May 28, 1948 41761789080092.pdf
A272573 Re Invention and Patent Application, Serial No. 682,096 41761809080094.pdf
A272576 Acknowledgment of Secrecy Order Served Upon Patent Application Serial No. 682,096 41761799080093.pdf
A272650 Secrecy Order and Permit A for Cryptographic System, Patent Serial No. 682,096 41761979080112.pdf
A272680 Revocation of Power of Attorney and Power of Attorney-In the United States Patent Office 41761899080102.pdf
A272684 Application of William F. Friedman, for Cryptographic System 41761949080108.pdf
A272688 Requested Information (Re William F. Friedman Patent Application) 41762109080124.pdf
A272691 Patent Application of William F. Friedman for Cryptographic System 41762139080127.pdf
A272710 Response to William F. Friedman Patent Application Claim Rejection 41762179080130.pdf
A272712 Patent Application No. 682,096-William F. Friedman-Cryptographic System 41762839080197.pdf
A272713 Continuance of Patent Application, Serial No. 682,096 41762029080116.pdf
A272717 Request for Continuance of Cryptographic System Patent Application, Serial No. 682,096 41762479080160.pdf
A272719 Responsive to Amendment of Aug. 29, 1941 41762209080134.pdf
A272724 Amendment Re Patent Application, Serial No. 682,096 41762229080136.pdf
A272725 Continuance of Patent Application, Serial No. 682,096 41761869080100.pdf
A272731 Responsive to Letter Filed Sept. 10, 1938 Re Patent Application 682,096 for Cryptographic System 41761859080099.pdf
A272736 Request for Reconsideration of Final Rejection of Method Claims 26-34 Re Patent Application No. 682,096 41762539080167.pdf
A272738 Assignment Re Patent Application Serial No. 682,096 41762259080139.pdf
A272741 Patent Application, Ser. No. 682,096, Filed July 25, 1933-Improvement In Cryptographic System 41762079080121.pdf
A272743 Assignment of Patent-Note 41762329080146.pdf
A272744 Convertor, Type M-134-T2 Schematic Diagrams 41762609080173.pdf
A272779 Appeal from the Principal Examiner to the Board of Appeals Re Application of Serial No. 682,096 Cryptographic System 41762299080143.pdf
A272783 Responsive to Amendment Filed July 24, 1935 Re Patent Application, Serial No. 682,096 Cryptographic System 41762389080152.pdf
A272785 Responsive to Patent Office Action Dated January 30, 1935 Re Patent Application, Serial No. 682,096 Cryptographic System 41762439080158.pdf
A272794 Keyboard Actuating Mechanism-M134t2 41762459080159.pdf
A272801 Responsive to Amendment Filed Dec. 5, 1934 Re Patent Application Ser. No. 682,096 Cryptographic System 41762509080164.pdf
A272825 Copy of Berardini V. Tocci Decision 41762519080165.pdf
A272831 Responsive to Patent Office Action Dated June 6, 1934 Re Cryptographic System Patent Application Ser. No. 682,096 41762359080150.pdf
A272842 Responsive to Amendment Filed April 3, 1934 Re Cryptographic System Patent Application Ser. No. 682,096 41762599080172.pdf
A272847 Responsive to Patent Office Action Dated October 9, 1933 Re Cryptographic System Patent Application Ser. No. 682,096 41763209080234.pdf
A272861 Re Action Responsive to Patent Office Action Dated October 9 41762739080187.pdf
A272877 Gist of Exparte McCulley .3820.G.3 (1929 C.D (Court Decision) 41762419080155.pdf
A272884 Alleged Combination In Which One Element Is Novel 41762529080166.pdf
A272888 Code Message Not an "Art" 41762619080175.pdf
A272896 Re Patent Examiner's Report 41762549080168.pdf
A272903 Patent Examiner 'References Made of Record' 41762569080169.pdf
A272907 William F. Friedman Schematic Drawings 41762629080176.pdf
A272912 Cryptographic Systems Invention-(Re Patent Application) Ser. No. 682,096-M-134-T2 41762589080170.pdf
A272917 I Claim-(Re Cryptographic System Patent Application Ser. No. 682,096) 41762679080182.pdf
A272919 Re Draft of Specifications and Drawings Applying to the Cipher Machine Construction 41762779080191.pdf
A272929 Schematic Drawings 41762769080189.pdf
A272932 New Patent Application, Cryptographic System (Improvement on Serial No. 588,344) 41762669080179.pdf
A272934 William F. Friedman Schematic Drawings 41762919080205.pdf
A272940 Key Tape Transmitter Drawing 41762799080193.pdf
A272971 Modification In the Navy Cipher Machine 41763489080262.pdf
A4161643 Memo on Ch, Plans & Operations Add New Claims 41709709074902.pdf
(Folder ID: FOLDER 120) Memoranda and Reports Related to Policies on the Use of SIGABA/ECM (Electric Ciphering Machines), 1940-1952
Document ID Document Title Filename
A2435719 Background of Policy In Regard to Making SIGABA Available to the British 41773049081213.pdf
A2435726 Proposed Exchange Basis with the British 41773009081209.pdf
A2435729 Exchange of Cryptographic Information with Great Britain 41772449081153.pdf
A2435737 Establishment of Joint Cryptographic Systems for the United States and Great Britain 41771849081093.pdf
A2435740 Conference on Joint U.S. and British Cryptographic Systems 41773039081212.pdf
A2435743 Establishment of Joint U.S. and British Encrypted Communications 41772009081109.pdf
A2435745 Policy In Regard to Making ECM Available to the British 41771879081096.pdf
A2435749 Exposure of SIGABA to Viewing by British Personnel 41771899081098.pdf
A2435758 British Use of SIGABA 41771939081102.pdf
A2435764 Standardization of Security Practices 41771869081095.pdf
A2435771 Handling and Distribution of Messages Concerning Combined Subjects 41771919081100.pdf
A2435773 Conversation with British Representative Concerning Cryptographic Devices 41772059081114.pdf
A2435776 Preliminary Meeting Re Forthcoming Visit of Paymaster-Captain Wilson 41772049081113.pdf
A2435798 Meeting with UK Representatives: U.S. and British Joint Cryptographic Systems 41771799081088.pdf
A2435800 U.S. and British Discussions for A New Combined Cipher Machine 41771959081104.pdf
A2435802 U.S. and British Discussions on A New Combined Cipher Machine 41772179081125.pdf
A2435917 U.S. and British Combined Cipher Machine Meeting 41771999081108.pdf
A2435919 U.S. Comments on Proposed British Rm26/32 Cipher Machine 41771979081106.pdf
A2435924 U.S. and British Collaboration on Combined Cypher Machine Development 41772079081116.pdf
A2435927 U.S. and British Collaboration on Combined Cipher Machine Development 41772989081207.pdf
A2435929 Collaboration Between British and U.S. on Development of A New Combined Cipher Machine 41772029081111.pdf
A2435931 U.S. and British Collaboration on Combined Cipher Machine Development 41772189081127.pdf
A2435932 Analysis and Discussions of Present and Future Status of CCM 41772099081118.pdf
A2435934 Army/Navy Conference on CCM Modification 41772219081130.pdf
A2435939 CCM Modification 41772139081122.pdf
A2435941 Comments on Army Proposals Regarding the CCM 41772199081128.pdf
A2435945 Minutes of Army/Navy Meeting on CCM Modification 41772419081150.pdf
A2435947 Modification of Combined Cipher Machine 41772329081141.pdf
A2435952 Preliminary Discussions Generating the British Request for (1) Complete Interchange of Cryptographic Development Programs or (2) Release to the British of the Principles of the SIGABA 41772439081152.pdf
A2437273 Wiring Diagrams: Scrambler Unit 41772949081203.pdf
A2437279 Policy on SIGABA/ECM 41772809081189.pdf
A272413 State Department Use of Cipher Machine Electrical Stepping 41761769080090.pdf
A272416 Directive to G-2 Covering Interchange of Secret Technical Information with Representatives of British Government 41766689080579.pdf
A272418 Interchange of Technical Cryptanalytic Information Between the British and American Armies 41761729080086.pdf
A272422 Army-Navy Joint Policy Concerning Distribution and Disclosure of Cryptographic Design of the ECM-M134c 41766709080581.pdf
A272428 Extract from Summary of Messages Exchanged on Loss of Cryptographic Material at Bhamo, Burma 41761669080080.pdf
A272444 Analysis and Discussions of Present and Future Status of CCM 41761709080084.pdf
A272446 Analysis and Discussions of Present and Future Status of CCM 41761689080081.pdf
A272447 Analysis and Discussions of Present and Future Status of CCM 41761659080079.pdf
(Folder ID: FOLDER 121) Memoranda and Reports Related to Policies on the Use of SIGABA/ECM (Electric Ciphering Machines), 1943-1950
Document ID Document Title Filename
A2435986 Replacement of the Present Combined Cipher Machine (CCM) 41772349081143.pdf
A2436010 Replacement of the Present Combined Cipher Machine 41772749081183.pdf
A2436012 Replacement of the Present Combined Cipher Machine 41772669081175.pdf
A2436013 Replacement of the Present Combined Cipher Machine 41772559081164.pdf
A2436014 Issue of 131-A-1 and M-228 Equipment 41772569081165.pdf
A2436019 Combined Communications Machines: Proposed Draft of Report to JCS-Based on Admiral Stone's Paper 41772119081120.pdf
A2436022 Joint Communications-Electronics Committee Security and Cryptographic Panel Replacement of the Present Combined Cipher Machine 41772269081135.pdf
A2436032 Report by the Joint Communications-Electronics Committee to the Joint Chiefs of Staff on Replacement of the Present Combined Cipher Machine 41772389081146.pdf
A2436046 Report by the Armed Forces Security Agency Council to the Joint Chiefs of Staff on Replacement of the Present Combined Cipher Machines (CCM) 41772759081184.pdf
A2436048 Replacement of the "Combined Cipher Machine (CCM) 41772629081171.pdf
A2436073 Memorandum for DIRAFSA: BCM 41772639081172.pdf
A2436078 Combined British-U.S. Cypher Machine 41772159081124.pdf
A2436084 Questions About the BCM (CSP 3800a) Which the British May Ask, and Answers Thereto 41772969081205.pdf
A2436088 Questions About the BCM (CSP 3800) Which the British May Ask, and Answers Thereto 41773029081211.pdf
A2436091 Questions In Connection with the BCM (CSP 3800) Referred to Director AFSA for Decision 41772929081201.pdf
A2436098 Replacement of the Present Combined Cipher Machine 41772619081170.pdf
A2436104 Joint U.S. and British Cryptographic Systems 41772709081179.pdf
A2436113 Exchange of Japanese, Italian, and German Cryptographic Information Between the U.S. and Great Britain 41772869081195.pdf
A2436121 Memo Routing Slip: SIGABA 41772529081161.pdf
A2436126 Replacement of the CCM 41772769081185.pdf
A2436130 Handwritten Note Regarding the CCM 41772369081145.pdf
A2437290 SIGABA/ECM: Replacement of the Present Combined Cipher Machine 41772829081191.pdf
A272454 Replacement of Present Combined Cipher Machine (CCM) 41761699080083.pdf
A272456 Replacement of the Present Combined Cipher Machine 41761749080088.pdf
A272500 Listing of Papers Relative to CCM 41761839080097.pdf
A273805 Replacement of the Present Combined Cipher Machine 41763589080272.pdf
A273807 AFSA Publications 41763579080271.pdf
(Folder ID: FOLDER 122) Memoranda and Reports Related to Policies on the Use of SIGABA/ECM (Electric Ciphering Machines), Includes Photographs and Diagrams, 1948-1952
Document ID Document Title Filename
A2436186 U.S. and British Use of Ecms 41772729081181.pdf
A2436194 Discussion with Lt. Col. Henn-Collins, Royal Signals, Concerning ECM/Sigba Principles 41772849081193.pdf
A2436197 UK Familiarity with the ECM Principle 41772609081169.pdf
A2436206 Release of the Principles of the CSP 2900 to the U.K., Canada, Australia, and New Zealand 41772599081168.pdf
A2436227 Release of Crypto-Equipments to Great Britain and NATO 41772889081197.pdf
A2436228 Combined Cipher System for SSOS 41772739081182.pdf
A2436229 Release of the Principles of the ECM to the U.K., Canada, Australia, and New Zealand 41772659081174.pdf
A2436230 Replacement of the CCM 41772399081148.pdf
A2436239 United States-United Kingdom Security Agreement 41772649081173.pdf
A272521 Alteration of Secret Status of Patent Application Serial No.-Armed Services Patent Advisory Board (Blank Form) 41761779080091.pdf
(Folder ID: FOLDER 123) History of the M-134-C, Three Volumes, 1944-1952 (2 Folders)
Document ID Document Title Filename
A522328 History of Converter M-134-C Volume 1 41768449080756.pdf
A523186 History of Converter M-134-C Volume 2 41768399080751.pdf
A523210 History of Converter M-134-C Volume 3 41768519080763.pdf
(Folder ID: FOLDER 127) SIGABA SISDE-28, Method of Commutator Control for M-134-T2, Friedman and Graham, 1933-1941
Document ID Document Title Filename
A522292 Folder Cover-Method of Commutation Control for M-34-T2 41768339080743.pdf
A522293 Cryptographic Security Provided by Converter M-134-T2 41768329080742.pdf
A522295 Converter M-134-T2 41768359080745.pdf
A523291 Proposed Scheme-Cipher Wheel Stepping Mechanism 41768619080771.pdf
(Folder ID: FOLDER 128) Patent File, SISDE-5, Single Commutator Cryptograph, Serial No. 588,344, Patent No. 2,028,772, Friedman and Graham, 1930-1936
Document ID Document Title Filename
A521766 Folder Cover-Single-Commutator Cryptograph 41766209080531.pdf
A521770 Patent 2,028,772-Cryptographic System 41766229080533.pdf
A521773 Response to Patent Office Action of April 1, 1935 41766249080535.pdf
A521775 Patent Examiner Responds to Patent Serial No. 588,344 Amendment Filed Feb. 26, 1935 41766269080537.pdf
A521776 Response to Patent Office Action of September 7, 1934 Re Patent Serial No. 588,344 41766289080539.pdf
A521778 Patent Examiners Response to Amendment Filed July 31, 1934 41766299080540.pdf
A521788 Response to Patent Office Dated Feb 15, 1934 In Regard to Patent Serial No. 588,344 41766339080544.pdf
A521790 Examiners Response to Patent Application No. 588, 344 Amendment Filed February 6, 1934 41766359080546.pdf
A521923 Response to Patent Office Action Dated September 21, 1933 for Patent 588,344 41766379080548.pdf
A521940 Examiner Responds to Amendment of June 22, 1933 Regarding Patent 588,344 41766399080550.pdf
A522066 Chief Signal Officer Directs Section to Secure Issuance of Patent Application No. 583,344 41766909080601.pdf
A522068 Friedman Et AL-Cryptographic System Patent Application Serial No. 588,344 41766919080602.pdf
A522070 Classification Regarding Mr. Friedman's Patent 41766929080603.pdf
A522073 Pros and Cons for Allowing Issuance of Patent 41766939080604.pdf
A522079 Modification of Wiring Diagram on Blue Print Es-B-1177a 41766949080605.pdf
A522083 Status of Patent Application Serial 588,344-M-134-T2 41766959080606.pdf
A522088 Friedman Forwards Memorandum of Interest to Signal Corps Laboratories 41766969080607.pdf
A522089 Letter from Friedman to Signals Corps Laboratories 41766979080608.pdf
A522090 Status on the Progress of New Cipher Machine 41766989080609.pdf
A522091 Patent Application Serial No. 588,344, Filed January 23, 1932 Cryptographic System 41766999080610.pdf
A522092 Supplemental to Amendment for Patent Application 588,344 41767009080611.pdf
A522094 Response to Amendment for Patent Application 588,344 41767039080614.pdf
A522096 Response to Patent Office Action Dated December 22, 1932 Regarding Patent Application 588,344 41767079080618.pdf
A522097 Patent Examiner Responds to Amendment of September 26, 1932 Regarding Patent Application 588,344 41767099080620.pdf
A522098 Convertor, Type M-134 41767059080616.pdf
A522101 Draft of "Military Characteristics Of A Cipher Machine" for Use In Message Centers of Division and Higher Headquarters 41767109080621.pdf
A522103 Converter Type M-134-T1 41767119080622.pdf
A522105 Report on Signal Corps Converter, Type M-134 41767129080623.pdf
A522107 Additional Tape Transmitter for Cipher Machine 41767139080624.pdf
A522108 Description and Operating Instructions for Converter, Type M-134-T1 41767149080625.pdf
A522112 Recommendations and Comments Regarding Cipher Device 41767169080627.pdf
A522114 Preliminary Report on Signal Corps Converter, Type M-134 41767189080629.pdf
A522115 Correction to Patent Application 588,344 41767219080632.pdf
A522118 Submission of Patent Copy to At&t 41767249080635.pdf
A522119 Submission of A Copy of Patent to At&t 41767259080636.pdf
A522120 Improvement of the Stepping Arrangement 41767269080637.pdf
A522121 George A Graham Wants to Retain Original Patent Nr. 1,857,374 41767279080638.pdf
A522122 Comments Regarding Patent Application 41767289080639.pdf
A522123 Patent Issues 41767299080640.pdf
A522124 Patent Application, Serial No. 588,344 Cryptographic System 41767309080641.pdf
A522125 Status of Patent 41767319080642.pdf
A522126 Comments Regarding First Action on Cipher Machine Patent Application 41767329080643.pdf
A522127 Patent Examiner Comments 41767339080644.pdf
A522128 Papers In the Case of the Cipher Machine Invention 41767349080645.pdf
A522129 Status of Cipher Machine Speed 41767359080646.pdf
A522142 Patent Application for Adapter 41767369080647.pdf
A522145 Comments on Fix to Cipher Wheel Patent 41767389080649.pdf
A522146 Record of Military Invention-Cryptographic System 41762049080117.pdf
A522151 Circumstances Which Establish the Date of Completion Regarding Invention 41767399080650.pdf
A522152 Distribution List with Handwritten Note from Friedman 41767449080655.pdf
A522154 Report on Visit to the Signal Corps Laboratories by Mr. Friedman 41767419080652.pdf
A522155 Suggestions on Draft of Patent Application for Cipher Machine 41767509080661.pdf
A522164 Object of Cipher Machine Invention with Drawings 41767469080657.pdf
A522170 Distribution List with Handwritten Note 41767529080663.pdf
A522171 Distribution List 41767579080668.pdf
A522172 Distribution List with Handwritten Note 41767599080670.pdf
A522173 Distribution List with Handwritten Note 41767629080673.pdf
A522174 Specifications and Claims Applicable to Cipher Machine Invention 41767659080676.pdf
A522181 Letter Regarding Development of Cipher Machine 41767679080678.pdf
A522183 Note Regarding Conference 41767699080680.pdf
A522188 Letter Regarding Cipher Tapes and Discussion on Cipher Wheel Invention 41767969080707.pdf
A522194 Information Regarding Cipher Invention 41767979080708.pdf
A522195 Extract from Report of Signal Corps Laboratories for Month of December, 1930 41767999080710.pdf
A522201 Specification for Field Cipher Machine 41768029080712.pdf
A522226 Description of Cryptograph System 41768059080717.pdf
A522233 Information Regarding Cipher Machine Invention 41768089080719.pdf
A522259 Request for Sketches In Conjunction with Cipher Invention 41768309080740.pdf
A522273 Cipher Wheel Drawings 41762069080120.pdf
(Folder ID: FOLDER 129) Patent File, SIGABA SISDE-8, Modified M-134-T2, Serial No. 107,244, Means for Controlling Displacement of Cipher Wheels on Hebern Type Cryptograph, 1935-1955
Document ID Document Title Filename
A521537 Folder Cover-Modified M-134-T-2 41765469080457.pdf
A521538 Patent Application No. 107,244 Placed Under Provisions of Title 35 U.S.C (1952) Section 267 41765489080459.pdf
A521540 Response to Patent Office Action of 29 December 1951 for Patent Application 107,244 41765499080460.pdf
A521541 Change to Patent Application 107,244 41765519080462.pdf
A521552 Response to Appeal from Patent Examiner on Patent 107,244 41765539080464.pdf
A521556 Appeal Regarding Patent Application 107,244 41765559080466.pdf
A521576 Appeal for Patent Application 107,244 41765579080468.pdf
A521579 Patent Examiner Responds to Amendment of April 30, 1947 Regarding Patent 107,244 41765599080469.pdf
A521632 Patent Office Acknowledges Receipt of Letter to the Secretary of War 41765609080471.pdf
A521636 Authorization Given for Patent Application Inspection 41765649080475.pdf
A521638 Secrecy Order for Patent Application 107,244 41765629080473.pdf
A521639 Appointment of Associate Attorney 41765659080476.pdf
A521640 Power of Attorney 41765679080478.pdf
A521643 Amendment to Patent Application 107,244 41765699080480.pdf
A521646 U.S. Patent Office Action 41765719080482.pdf
A521649 Amendment to Patent 107,244 41765739080483.pdf
A521650 U.S. Patent Office Action 41765749080485.pdf
A521652 Patent Application of W.F. Friedman 41765769080487.pdf
A521654 Patent Examiner Responds to Amendment Filed Nov. 28, 1940 41765789080488.pdf
A521657 Amendment to Patent Application No. 107,244 41765799080490.pdf
A521661 Classification Question Regarding Patent Application S.N. 107,244 41765819080492.pdf
A521663 Patent Application Serial No. 107,244 41765829080493.pdf
A521669 Cryptographs, Ser. No. 107,244, Filed Oct 3, 1936 (Improvement In Converter M-134-T2) 41765839080494.pdf
A521672 Response to Patent Office Action of March 6, 1937 In Regards to Patent 107,244 41765849080495.pdf
A521673 Patent Application, Serial No. 107,244-Cryptographs Improvement on Patent Application, Ser. No. 682,096 41765869080497.pdf
A521677 Patent Examiner Comments on Patent Application 107,244 41765889080499.pdf
A521678 New Patent Application, Improvement In Cryptographs 41765899080500.pdf
A521681 Description of Cryptographic Invention 41765919080503.pdf
A521682 Minutes of Signal Corps Patent Board Meeting No. 2 41765969080507.pdf
A521685 Modification In Converter Type M-134-T2 Improvement In Prior Patent Application Serial No. 682,096 Invention of Mr. Wm. F. Friedman 41765989080509.pdf
A521689 Action In Connection with Endorsement Re M-134-T2 41766019080512.pdf
A521705 Proposed Modification of Converter Type M-134t2 41766049080515.pdf
A521711 Patent Board Recommendations for Modifications In Converter M-134-T2 41766079080518.pdf
A521715 Modification In Converter Type M-134-T2 Improvement In Prior Patent Application Serial No. 682,096 Invention of Mr. Wm. F. Friedman 41766099080520.pdf
A521721 Modification In Converter Type M-134-T2 Improvement In Prior Patent Application Serial No. 682,096 Invention of Mr. Wm. F. Friedman 41766119080522.pdf
A521723 Minutes of Signal Board Patent Board Meeting No. 2 41766139080524.pdf
A521740 Specifications and Drawings of Proposed Modification of Converter Type M-134t2 41766159080526.pdf
A521741 Invention of Cipher Wheel Control Mechanism for A Cipher Machine of the Type of Converter M-134-T2 41766179080528.pdf
A521758 Invention of Cipher Wheel Control Mechanism for A Cipher Machine of the Type of Converter M-134-T2 41766189080530.pdf
(Folder ID: FOLDER 130) Patent File, SIGABA Signals Intelligence Service (SIS) Systems, M-134-T2 (SISDE-7), Serial No. 682,096, 1933-1941
Document ID Document Title Filename
A521321 Folder Cover for Patent Papers on Converter M134-T2 41761739080087.pdf
A521322 Patent Application No. 682,096-William F. Friedman-Cryptographic System 41761759080089.pdf
A521326 Converter M-134-T2 Wiring and Instruction Book Diagrams 41761889080103.pdf
A521376 Continuance of Patent Application 682,096, Cryptographic System 41761919080105.pdf
A521389 Rejection of Claims for Patent Application 682,096 41761939080107.pdf
A521395 Final Rejection for Patent Application 682,096 41761969080110.pdf
A521401 Patent Assignment: Serial No. 682,096 41761989080111.pdf
A521404 Patent Application, Ser. No. 682,096, Filed July 25, 1933 Improvement In Cryptographic System 41762009080114.pdf
A521411 Appeal from the Principal Examiner to the Board of Appeals; Serial: 682,096 41762099080123.pdf
A521418 Response to Amendment for Patent Application 682,096 41762119080125.pdf
A521426 Corrections to Patent Application 41762149080128.pdf
A521432 Patent Application Serial No. 682,096-Cryptographic System 41762189080132.pdf
A521451 Response to Patent Application 682,096-Cryptographic System 41762239080137.pdf
A521453 Response to Amendment for Patent Application 682,096 41762219080135.pdf
A521456 Response to Patent Application 682,096 for Cryptographic System 41762269080140.pdf
A521457 Alleged Combination In Which One Element Is Novel 41762309080144.pdf
A521459 Comments on Patent Examiners Report 41762339080147.pdf
A521461 Patent Application for Cryptographic System 41765409080451.pdf
A521464 Description of A Cryptographic Invention 41765419080452.pdf
A521468 New Patent Application, Cryptographic System (Improvement on Serial No. 588,344) 41765429080453.pdf
A521469 Wire Diagram for Key Tape Transmitter 41765439080454.pdf
A521498 Modification In the Navy Cipher Machine 41765449080455.pdf
(Folder ID: FOLDER 131) Patent File, SISDE-11 Friedman and Rowlett Self-Controlled Cryptographs, Serial No. 70,412, 1935-1953
Document ID Document Title Filename
A39619 Patent Application for Cryptographs-Friedman 41715859075516.pdf
A39622 Record of Inventions-Cryptographic Rotors 41715869075518.pdf
A39625 Patent Modifications for Cryptographs-Friedman 41715899075520.pdf
A39629 Patent Application for Cryptographs-Friedman 41715909075521.pdf
A39633 Patent Application for Cryptographs-Friedman and Rowlett 41715929075523.pdf
A39638 Patent Application for Cryptographs-Friedman and Rowlett 41715939075524.pdf
A39641 Secrecy Order for Patent Application for Cryptographs-Friedman and Rowlett 41715959075526.pdf
A39666 Patent Application for Cryptographs-Friedman and Rowlett 41715969075527.pdf
A39668 Patent Application for Cryptographs-Friedman and Rowlett 41715999075530.pdf
A39669 Patent Application for Cryptographs-Friedman and Rowlett 41716009075531.pdf
A39670 Patent Application for Cryptographs-Friedman and Rowlett 41716019075532.pdf
A39671 Patent Application for Cryptographs-Friedman 41716029075533.pdf
A39672 Communication from Examiner AS Regards Patent Application for Cryptographs-Friedman and Rowlett 41716039075534.pdf
A39673 Patent Application for Cryptographs-Friedman and Rowlett 41716049075535.pdf
A39674 Routing and Work Sheet-Patent Application for Cryptographs-Friedman and Rowlett 41716059075536.pdf
A39675 Patent Application for Cryptographs-Friedman and Rowlett 41716069075537.pdf
A39676 Patent Application for Cryptographs-Friedman and Rowlett 41717429075672.pdf
A39677 Amendment to Patent Application for Cryptographs-Friedman and Rowlett 41716099075540.pdf
A39678 Amendment to Patent Application for Cryptographs-Friedman and Rowlett 41716119075542.pdf
A39682 Amendment to Patent Application for Cryptographs-Friedman and Rowlett 41716139075544.pdf
A39683 Patent Application for Cryptographs-Friedman and Rowlett 41716199075550.pdf
A39686 Patent Application for Improvements In Cryptographs-Friedman and Rowlett 41716209075551.pdf
A39692 Patent Application for Cryptographs-Friedman 41716229075553.pdf
A39701 Description of Cryptographic Machine-Friedman 41716249075555.pdf
A39703 Patent Application for Cryptographs-Friedman and Rowlett 41716269075557.pdf
A39705 Patent Application for Cryptographs-Friedman and Rowlett 41716289075559.pdf
A39707 Patent Application for Cryptographs-Friedman 41716309075561.pdf
A39710 Hand Written Note on Cryptographs-Friedman 41716329075563.pdf
A39712 Patent Application for Cryptographs-Friedman 41717559075685.pdf
A39721 Patent Application for Improvement In Cryptographs-Friedman and Rowlett 41716379075568.pdf
A39726 Patent Application for Cryptographs-Friedman 41716399075570.pdf
A39729 Patent Application for Improvements In Cryptographs-Friedman and Rowlett 41716419075572.pdf
A39730 Patent Application for Improvements In Cryptographs-Friedman and Rowlett 41716439075574.pdf
A39732 Patent Application for Cryptographs-Friedman and Rowlett 41716459075576.pdf
A39735 Patent Application for Improvements In Cryptographs-Friedman and Rowlett 41716479075578.pdf
A39736 Patent Application for Cryptographs-Friedman and Rowlett 41716499075580.pdf
A39737 Concurrence Re R&D Memo 41716519075582.pdf
A39740 Patent Application for Improvements In Cryptographs-Friedman and Rowlett 41716539075583.pdf
A39742 Patent Application for Improvements In Cryptographs-Friedman and Rowlett 41716549075585.pdf
A39748 Patent Application for Improvements In Cryptographs-Friedman and Rowlett 41717589075688.pdf
A39750 Patent Application, Ser. No. 70,412, Filed March 25, 1936, Improvement In Cryptographs 41717619075691.pdf
A39751 Patent Application for Improvements In Cryptographs-Friedman and Rowlett 41716589075589.pdf
A39755 Patent Application for Improvements In Cryptographs-Friedman 41716619075592.pdf
A39757 Patent Application for Improvements In Cryptographs-Friedman 41716639075594.pdf
A39762 Converter Type M-134-T2-Friedman and Rowlett 41716699075600.pdf
A39767 Converter Type M-134-T2-Friedman and Rowlett 41716729075603.pdf
A39770 Record of Military Invention-Improvements In Cryptographs-Friedman and Rowlett 41716749075605.pdf
A39771 Routing and Work Sheet-Improvements In Cryptographs-Friedman and Rowlett 41717019075631.pdf
A39774 Specifications and Six Drawing-Improvements In Cryptographs-Friedman 41717049075634.pdf
A39777 Invention of Mechanical-Electrical Control of Cipher Wheels for Small Cryptograph-Friedman 41717079075637.pdf
A39823 A Means of Providing an Irregular Wheel Movement In Cipher Machines Using Cipher Wheels-Rowlett 41717099075639.pdf
(Folder ID: FOLDER 132) Patent File, SISDE-10, File on Patent Application for Cipher Machine, Constantly Rotating Commutator Machine, Serial No. 157,383, 1936-1938
Document ID Document Title Filename
A39507 Brief Description of A Cryptographic Machine Employing A Single Cipher Commutator-Friedman 41715219075452.pdf
A39508 Application for A Patent for an Improvement Cryptographic Apparatus-Friedman 41715249075454.pdf
A39510 Cryptographic Apparatus Patent Application-Friedman 41715309075462.pdf
A39512 Patent Application-Cryptographic Apparatus-Friedman 41715339075464.pdf
A39514 Cryptographic Apparatus Improvements In Converter M-134-T1 Patent Application, Ser. No. 157,383-Friedman 41715379075468.pdf
A39517 Friedman Patent Application-Cryptographic Apparatus 41715409075471.pdf
A39519 Friedman Patent Application-Cryptographic Apparatus 41715439075474.pdf
A39527 Record of Military Invention: Friedman Patent Application-Cryptographic Apparatus 41715469075477.pdf
A39528 Friedman Patent Application-Cryptographic Apparatus 41715489075479.pdf
A39530 Handwritten Description of Friedman Cryptographic Apparatus 41715509075481.pdf
A39534 Description of Friedman Cryptographic Apparatus 41715529075483.pdf
A39537 Patent Application of Friedman Cryptographic Apparatus 41715549075485.pdf
A39539 Friedman Cryptographic Apparatus 41715569075487.pdf
A39541 Friedman Cryptographic Apparatus 41715589075489.pdf
A39546 Patent Application for Converter 134-7-1-Friedman 41715599075490.pdf
A39550 Patent Board Meeting-Friedman 41715619075492.pdf
A39554 Modifications of Converter Type M-134-T-1-Friedman 41715639075494.pdf
A39556 Patent Board Meeting on Converter Type M-134-T-1 41715659075496.pdf
A39559 Preliminary Description of A Single-Commutator Cryptograph Suitable for War Department "Restricted" or "Confidential" Communications-Friedman 41715679075498.pdf
A39563 Wiring Diagram for Single-Commutator Cryptograph-Friedman 41715699075500.pdf
A39568 Modification In Converter Type M-134-T1-Friedman; U.S. Patent 2,028,772 of January 28, 1936 41793749083273.pdf
A39590 Signal Corps Patent Board Meeting on Converters M-134-T1 and M134-T-2-Friedman 41715729075503.pdf
A39593 Patent Board Meeting Decision on Converter M-134-T1-Friedman 41715749075505.pdf
A39595 Action on Patent Application on Converter M-134-T1-Friedman 41715759075506.pdf
A39599 Modification In Converter Type M-134-T1-Friedman; U.S. Patent 2,028,772 41715769075507.pdf
A39600 Modification In Converter M-134-T1-Friedman; U.S. Patent 2,028,772 of January 28, 1936 41715789075509.pdf
A39603 Brief Description of A Cryptographic Machine Employing A Single Commutator-Friedman 41715799075510.pdf
A39609 Detailed Description of Modification No. 2 In Converter Type M-134-T-1-Friedman 41715819075512.pdf
A39610 1st Modification In Converter Type M-134-T-1; Friedman Note 41715829075513.pdf
A40335 Lengthy Description of A Cryptographic Apparatus-Friedman 41717309075660.pdf
A4161646 Brief Description of A Cryptographic System and Machine Employing A Single, Aperiodically-Displaced Cipher Communicator 41785579082458.pdf
(Folder ID: FOLDER 133) Patent File, SISDE-6 Authentograph System, 1935-1937
Document ID Document Title Filename
A39486 Friedman Patent Application-Improvement: Message Authenticating System 41715029075433.pdf
A39489 Friedman Patent Application, Ser. No. 28,500 Message Authenticating System 41715069075437.pdf
A39491 General Description-the Friedman Authentograph 41715119075442.pdf
A39494 Patents Originated by Government Employees 41715149075445.pdf
A39498 Patent Application-Friedman Cipher Device 41715179075448.pdf
A40328 Patent Application for A Cryptographic Machine-Friedman 41717259075655.pdf
(Folder ID: FOLDER 137) Patent File, SISDE-31 Indicating Device, 1936
Document ID Document Title Filename
A39181 Indicating Device-Friedman; Signal Corps Patent Board 41712259075156.pdf
A39186 Obtaining A Patent for the Indicating Device 41712299075160.pdf
(Folder ID: FOLDER 143) NSA Field Commanders Conference Book, March 1955; Official Report of the NSA Field Commanders Conference, April 1955
Document ID Document Title Filename
A44743 NSA Field Commanders Conference-1955; Conduct of Operations In the Field 41726479076575.pdf
A44757 Official Report-National Security Agency Field Commanders Conference-1955 41726519076582.pdf
(Folder ID: FOLDER 371) Memoranda and Correspondence, Surplus Disposal and Exchange of Cryptographic Equipment (M-209), 1936-1954
Document ID Document Title Filename
A4162953 Release of M-359s to the French 41785259082427.pdf
A4162955 List of Numbers 41785169082418.pdf
A66635 Transmittal of Correspondence on Converter M-209, 29 December 1954 41755099079425.pdf
A66636 Disposal of Surplus Crypto-Equipment (AFSAC 66/30), 7 May 1952 41755109079426.pdf
A66638 Disposal of Surplus Crypto-Equipment, 22 October 1951 41755119079427.pdf
A66640 Disposal of Surplus Crypto-Equipment, 28 September 1951 41755129079428.pdf
A66641 Surplus Disposal of M-209( ) Cryptographic Equipment, 5 September 1951 41755149079430.pdf
A66644 M-209s Sent to French Indo-China (TS), 10 December 1954 41755169079432.pdf
A66646 M-209s Sent to French Indo-China, 5 November 1954 41755179079433.pdf
A66647 Release of M-209s to Indo-China, 8 January 1954 41755189079434.pdf
A66649 Release of the M-209 to Foreign Nations, 15 October 1953 42030309106912.pdf
A66650 Release of the M-209 to France, 1 January 1953 41755199079435.pdf
A66651 Interview with M. DE Vosjoli and M. Dousseau, 5 November 1953; French Requirement for U.S. COMSEC Equipment 41755209079436.pdf
A66653 Classification of M-209 AS Military Type I, 25 February 1946 41755229079438.pdf
A66655 Issue of Converter M-209 to Foreign Nations, 17 February 1949 41755239079439.pdf
A66657 Special Conference on M-209 Security, 12 October 1950 41755249079440.pdf
A66661 Transfer of M-209s to French Indo-China Forces, 25 October 1954 41755269079442.pdf
A66662 Reply from AFSA-02 Re SN 188,546: Hagelin, 20 November 1951 41755279079443.pdf
A66663 Information You Requested Re Application for Patent SN 188,546, Hagelin, 16 November 1951 41755289079444.pdf
A66665 Release of Hagelin U.S. Patent Application 188,546, 27 March 1952 42030279106909.pdf
A66667 Rescission of Secrecy Order Regarding Hagelin Patent No. 188546, 4 April 1952 41755309079446.pdf
A66671 Patent Application Discloses Improvement to M-209, 1 April 1952 41755329079448.pdf
A66672 Handwritten Note Re Hagelin US Serial No. 188, 546, 19 October 1951 41755339079449.pdf
A66676 Issue of M-209 to Foreign Nations, 17 September 1951 41755349079450.pdf
A66677 Release of Cryptographic Material or Equipment to Foreign Governments; Decisions to Release 41755359079451.pdf
A66680 Issue of Converter M-209, 17 February 1949 41755369079452.pdf
A66684 Hagelin Patents, 1 January 1951 41755389079454.pdf
(Folder ID: FOLDER 372) Memoranda, Release of Crypto Equipment to Foreign Governments (M-209), 1953-1954
Document ID Document Title Filename
A66577 Release of AFSAM 7, 26 February 1954 41754999079415.pdf
A66614 Request for Publications, 25 January 1954 41755009079416.pdf
A66615 Release of Cryptographic Information to the U.K. , 14 September 1953 41755019079417.pdf
A66617 Release of M-209s to the French, 12 January 1954 41755029079418.pdf
A66618 Converters, M209, 16 December 1953; Countries Supplied M209 Converters 41755039079419.pdf
A66629 Release of the ASAM-4 Cryptoprinciples to the U.K., Canada, Australia and New Zealand, 6 July 1953 41755049079420.pdf
A66631 Policy and Procedure for Disclosure of Cryptographic Information to Foreign Nations, 26 June 1953 41755059079421.pdf
A66633 French Modified Converter M-209-B, 25 March 1952 41755069079422.pdf
A66634 French Modified Converter M. 209-B, 6 March 1952 41755079079423.pdf
(Folder ID: FOLDER 397) Hagelin Telecrypto System, 1950-1952
Document ID Document Title Filename
A58738 Reconstruction of All Machine Variables from Two Messages, 1000 Characters In Length on Telecrypto with One Cylinder Offset Between the Messages; AFSA-412b2-1550.2 41726789076605.pdf
A58750 Intra-AFSA Memo on Low Echelon Cipher Machine 41726839076609.pdf
A58755 COMSEC Chief's Memo on Low Echelon Cipher Machine 41726879076613.pdf
A58758 Cryptanalytic Survey; from AFSA-343 41726909076616.pdf
A58768 Forwarding Memo for BRUSA 41726969076622.pdf
A58782 Analysis on Experimental Model Device 41727009076626.pdf
A58785 French Modification of the M209b Converter 41727069076632.pdf
A58792 Personal Letter-Changeable Alphabet Wheels Relating to the Hagelin Machine 42030869106968.pdf
A58805 French Applications and Patents for Cipher Machines; from SUSLO London to USCIB Coordinator 41727379076664.pdf
A58813 Telecrypto and Cryptex Model CI 41727529076678.pdf
A58818 French Modification of M-209-B Hagelin; Msg from USCIB Coordinator to SUSLO, London 41727619076686.pdf
A58822 Memorandum for the Director, Central Intelligence; Cover Memo from DIRAFSA to DIR CIA 41727679076693.pdf
A58828 Report on Visit to French "Section Du Chiffre" 41727709076697.pdf
A58833 Proposed Modifications to the Hagelin Machine 41727749076702.pdf
A58863 C11, Cover Letter for Drawings of the Telecrypto Device Sent to Mr. William Friedman 41727799076705.pdf
A58868 Memo Routing Slip from Friedman Commenting on Relative Security of Telecrypto Device 41727859076711.pdf
A58870 Security of Telecrypto; Partial Text (Page Two) of Intra-AFSA Memo 41730379076962.pdf
A58872 Security Regarding the Telecrypto Device; Partial Text (Page One) of Intra-AFSA Memo 41727919076717.pdf
A58884 Cryptanalytic Survey of New Hagelin Teletype Scrambler 42030839106965.pdf
A58949 Memo Re New Developments In Ciphering Devices, by Boris Hagelin, Zug.; an Auxiliary Ciphering Machine-Cryptic Mod. CI 41728009076726.pdf
A58956 Personal Letter to Friedman from Hagelin-New Ciphering Devices (Cryptex and A Mechanical Machine to Supersede the M-209) 41728059076731.pdf
A58958 Telecrypto Apparatus Type Tkg 5/14; Documentation Given to Friedman on 20 November 1949 41728109076736.pdf
A60357 Low Echelon Cipher Machine; Friedman Memo Routing Slip 41729659076890.pdf
A60359 French Modification of the M-209 Converter 41729689076894.pdf
(Folder ID: FOLDER 398) Hagelin Patents, 1942-1954
Document ID Document Title Filename
A58658 Document Cover-Patent Application No. 701,404, Filed 7 Dec 1933 41726539076578.pdf
A58686 Applications for Patent of Albert W. Small; Intra-Agency Comments 41726559076580.pdf
A58689 Application for Patent of Albert W. Small-NSA Position 41726579076583.pdf
A58692 History of Hagelin Patent Rights 41726609076585.pdf
A58702 Hagelin Grants License to United States to Manufacture Under Patents for Ciphering Device Serial No. 286,286 41726629076588.pdf
A58704 United States Patent 2,247,170 Ciphering Machine; Hagelin's Machine 41726639076589.pdf
A58711 Hagelin's Description, with Drawings, of His Ciphering Machine 41726669076592.pdf
A58715 Hagelin's Description of A New Keying Device for Cryptographic Machines 41726679076593.pdf
A58719 United States Patent 2,089,603 Ciphering Machine; for Hagelin's Machine 41726689076594.pdf
A58724 Hagelin's Description of Ciphering Machine 41726719076597.pdf
A58730 Hagelin's Description and Drawings of His Cipher Machine for Patent Application 41726749076600.pdf
A60329 Hagelin Grants United States Rights to Patent No. 2,089,603 41729499076875.pdf
A60335 Hagelin Assigns United States Rights to Patent No. 2,089,603 41729519076877.pdf
A60337 Hagelin Assigns United States Rights to Patent No. 2,089,603 41729539076879.pdf
A60342 U.S. Government Grants Hagelin License Under Patent No. 2,089,603 41729579076883.pdf
A60353 Hagelin Company Grants United States License to Manufacture Under Patent No. 2,247,170 41729619076887.pdf
(Folder ID: FOLDER 399) Correspondence on Inventions, Patents, and Unsolicited Suggestions, 1932-1953
Document ID Document Title Filename
A58601 Part-Time Consultants and Part-Time Employees; Memo from Friedman Re Memo from Government Patents Board 41722139076140.pdf
A58609 Comments on Development of Language Translating Equipment; Intra-AFSA Memo 41726069076534.pdf
A58613 Study Entitled "Proposals For The Mechanical Resolution Of German Syntax Patterns"; Intra-AFSA Memo from Friedman 41726139076540.pdf
A58615 Letter from Friedman Re "Proposals For The Mechanical Resolution Of German Syntax Patterns" 41726149076541.pdf
A58619 Memo Routing Slip from Friedman Re Mechanical Resolution 41726199076545.pdf
A58622 Letter from Friedman Re Language Translation Study 41726249076549.pdf
A58628 Friedman Letter Re Rapid Methods of Document Transmission 41726289076553.pdf
A58632 Letter to Friedman Re Study of Language Translation by Machine 41726329076558.pdf
A58638 Press Release from National Patent Council; Statement by National Patent Council 41726369076562.pdf
A58640 Personal Note-Address and Telephone Number 41726389076564.pdf
A58646 Invention of Golf Scoring Device; Memo to Friedman Re Lack of ASA Interest In Device 41726439076568.pdf
A58650 Invention of Golf Scoring Device; Friedman's Memo Re Licensing of New Device 41726469076572.pdf
A58655 Friedman Memo for the Record Re Stepping of Cryptographic Rotors 41726509076574.pdf
A60317 Excepted Part-Time Consultants and Part-Time Employees; Memos from Government Patents Board 41729439076869.pdf
A60320 Comment on Mr. Harold P. Edmundson's Letter Dated 5 Feb 1951; Intra-AFSA Office Memo to Friedman 41729469076872.pdf
(Folder ID: FOLDER 400) Communications Security and the Purchase of Hagelin Machines, 1952
Document ID Document Title Filename
A58504 Machine Negotiations; Intra-AFSA Memo 41793739083272.pdf
A58567 Memo Routing Slip-Insecurity of Communications 41722009076127.pdf
A58576 Intra-AFSA Memo from 02 to Oot 41722039076130.pdf
A58590 Request for Technical Evaluating, Coding and Decoding Machines 41722079076134.pdf
A58599 the Problem of Communications Security 41722099076136.pdf
(Folder ID: FOLDER 425) Reports, US/UK Communications Security (COMSEC) Equipment, 1953
Document ID Document Title Filename
A522530 U.S. Communications Security Equipments and U.K. Cryptographic Equipments 41774259081336.pdf
A522534 UK/US COMSEC Conference 41774489081357.pdf
(Folder ID: FOLDER 443) Papers on the Security of AFSAM 4a Machine (1955), Plain Text Radiation Study of Tsec/Kl-7, Comments on Afsay D802 (1955 "Enciphered Motion" Branching Structure, 1955
Document ID Document Title Filename
A56973 Security of AFSAM 4a 41750809078999.pdf
A56974 Plain Text Radiation Study of Tsec/Kl-7 (AFSAM 7); S-60,081 41787249082625.pdf
A56978 Preliminary Report on AFSAM 9 Depth Study; UKUSA-343 41751019079020.pdf
A56981 Depth Study on the AFSAM 109; S-60.077 41751049079022.pdf
A56988 Comments on Afsay D802; UKUSA C/S 651 41751059079024.pdf
A56994 Enciphered Motion Branching Structure 41787319082632.pdf
(Folder ID: FOLDER 444) Report, Pneumatic Authenticator or DEM 498, 1954
Document ID Document Title Filename
A56969 the Pneumatic Authenticator or DEM 498 41750779078996.pdf
(Folder ID: FOLDER 473) Memoranda and Reports Related to the Development, Maintenance, and Service Tests of Cryptographic Equipment, 1946-1949
Document ID Document Title Filename
A71107 Substitution of Mos 801 for Mos 239 In Zi Commands 41721099076037.pdf
A71108 Cryptographic Equipment, 28 October 1948 41721119076039.pdf
A71109 Cryptographic Equipment; SIGABA and System 1503, 28 October 1948 41721129076040.pdf
A71110 Catalog of Crypto-Equipments, 17 December 1948 41721149076042.pdf
A71111 Military Characteristics for Cryptographic Equipment for Staff Communications, 2 November 1948 41721169076044.pdf
A71112 Development of Crypto-Equipments, 16 August 1948 41721189076046.pdf
A71113 Proposed Directive Concerning Destruction of Crypto-Equipment 41721209076048.pdf
A71114 Maintenance of Cryptographic Equipment by Department of State Personnel, 29 April 1948 41721489076075.pdf
A71115 Responsibility In Connection with Crypto-Equipments, 19 March 1948 41721509076077.pdf
A71116 Disposition Instructions on Cryptographic Material, 11 February 1948 41721529076079.pdf
A71117 Cross Reference Sheet Re Cryptographic Facilities, 28 January 1948 41721549076081.pdf
A71118 Report of Contacts Outside of Security Division, 24 November 1947 41721569076083.pdf
A71119 Power Supply for Cryptographic Installations, 24 October 1947 41721589076085.pdf
A71120 Standardization of Means of Interconnection of Component Parts of Communication and Cryptographic Equipments 41721609076087.pdf
A71121 Extracts from Research and Development Progress Report-January 1947 Adm Signal Establishment, 1 January 1947 41721619076088.pdf
A71332 Service Tests for Various Crypto-Equipments, 11 January 1949 41722189076145.pdf
A71333 Disposition of Cryptographic Devices, 13 July 1948 41722199076146.pdf
(Folder ID: FOLDER 476) Extracted Correspondence Related to Patent Information Related to Theodore I. Przysiecki and Dehn (US Patent Nos. 2,405,570 and 2,401,507), 1947-1948
Document ID Document Title Filename
A71102 U.S. Patent Nos. 2,405,570 and 2,401,507, 24 September 1947 41720969076024.pdf
A71103 Proposed Application for Patent of Theodore X. Prayslecki for Orientation Device (Case #4), 1 April 1948 41720979076025.pdf
(Folder ID: FOLDER 482) Storage and Destruction of SIGSALY and Associated Equipments, 1947-1948
Document ID Document Title Filename
A71041 Formal Statements Re Cryptographic Security on Project X61753/SIGSALY, 17 October 1947 41720319075960.pdf
A71046 SIGSALY Conference, 9 August 1944 41720369075965.pdf
A71048 Security Classification of SIGSALY, 2 August 1944 41720389075967.pdf
A71049 Suggestions for Disposing of X-System Equipment 41720419075970.pdf
A71053 Request for Technical Help from Bell Telephone Lab Re Storage of Cryptographic Equipments, 12 December 1947 41720449075973.pdf
A71054 Security Classification of SIGSALY, 2 August 1944 41720479075976.pdf
A71330 Storage and Destruction of SIGSALY and Associated Equipments, 12 August 1948 41722159076142.pdf
A71331 Storage and Destruction of SIGSALY and Associated Equipment 41722179076144.pdf
(Folder ID: FOLDER 483) Memoranda and Reports, Use of SIGABA In Conjunction with Standard IBM Codatype Units, 1943
Document ID Document Title Filename
A71028 Experimental Assembly of SIGABA with Page Printer, 17 November 1943 41720199075948.pdf
A71032 Use of SIGABA In Conjunction with Standard IBM Codatype Units, 18 March 1943 41720229075951.pdf
A71033 Discussions Re Application of IBM Codatype Equipment to the SIGABA, 10 March 1943 41720259075954.pdf
A71036 Receipts for Cryptographic Equipment, 1 January 1943 41720289075957.pdf
(Folder ID: FOLDER 484) Status Reports of Research and Development Phases of Cryptographic Equipment, Extract from the Final Report of G-2-D, General Headquarters (Ghq) American Expeditionary Forces (Aef (1 May 1919) Regarding Censorship and Use of Invisible Ink, 1944-1946
Document ID Document Title Filename
A70995 Final Report of G-2-D, G.H.Q., A.E.F., May 1 1919 41720079075936.pdf
A70997 Letter from Bell Telephone Laboratories to Colonel Corderman Re Type II Ciphony Development, 16 June 1944 41720089075937.pdf
A71001 Project-an/Gxa-2( )-Cifax, 7 July 1944; Cipher Facsimile System-Contract No. W44-114-SC-34 41720099075938.pdf
A71010 Signal Corps Project No. 4600; F Branch Proj. No. C-2012-an/Gsq-1 (SIGJIP) Synchronization-(Ciphony), 27 December 1944; Problem of Pulse Synchronization of Speech Equipment 41720109075939.pdf
A71012 Teletypewriter Adapter to an/Gsq-2,3, 22 December 1944 41720119075940.pdf
A71015 Publication R-5, 5 December 1945 41720129075941.pdf
A71020 Patent Information on ASAM-1 and ASAM-2, 15 April 1948 41720139075942.pdf
A71023 Hand Drawn Diagrams of Two Japanese Crypto Machines-Ransjsakusei Ki and Ango Ki Kai, Random Number Generating Machine and Cipher Machine, Respectively 41720149075943.pdf
A71025 Proposed System for Guaranteeing A Minimum Cycle of Great Length In Any Irregular Motion Rotor System, 1 January 1946 41720169075945.pdf
A71329 Signal Corps Project No. 2513a; an/Gsq-2,3 Key Generator Equipment (Ciphony), 17 March 1945 41722149076141.pdf
(Folder ID: FOLDER 485) Memoranda, Procedures, Policies, and Requirements Related to Packaging and Long-Term Storage of Various Cryptographic Devices, 1944-1949
Document ID Document Title Filename
A70905 Storage Space for SIGSALY, 28 September 1949 41719279075857.pdf
A70906 Accounting Procedure for Packaged Cryptographic Machines 41719319075861.pdf
A70908 Inundation of Cryptographic Storage Room 41719339075863.pdf
A70909 Packaging of SIGIVI 41719369075866.pdf
A70911 Packaging of ASAM 2-1 for Long Term Storage 41719389075868.pdf
A70912 Hydrogen Permeability of Sheet Materials; Cross-Index Sheet 41719399075869.pdf
A70914 Packaging of Forty SIGRODS for Long Term Storage 41719419075871.pdf
A70915 Considerations for Packaging of New Equipment 41719429075872.pdf
A70916 Determining Requirements of Excess Equipment, 22 September 1948; Excess TG-30 41719449075874.pdf
A70917 Storage and Preservation Cryptographic Material, 14 September 1948; War Reserve Stocks 41719459075875.pdf
A70918 War Reserve Stocks, 26 May 1948; Completed Project Summary 41719479075877.pdf
A70928 Weather Cryptographic Equipment, 20 April 1948; Storage and Preservation of Cryptographic Material 41719499075879.pdf
A70930 Air Force Review of Cryptographic Requirements for Handling Weather Cryptographic Equipment, 20 April 1948 41719519075881.pdf
A70932 Withdrawal of Funds for Project 310, 12 February 1948; Budget Estimate and Requirements 41719549075885.pdf
A70938 Quantity of SIGROD to Be Prepared for Long Term Storage, 30 January 1948 41719569075886.pdf
A70939 Storing of Cryptographic Devices and Materials, 15 December 1947 41719599075889.pdf
A70942 Accounting Procedure for Packaged Cryptographic Machines, 11 September 1947 41719619075892.pdf
A70944 Accounting Procedure for Packaged Crypto Machines, 8 August 1947; Storage and Preservation of Crypto Material 41719659075895.pdf
A70946 Accounting Procedure for Packaged Cryptographic Machines, 10 October 1947 41719679075897.pdf
A70948 Cryptographic Packaging, 13 June 1947 41719709075900.pdf
A70953 Unspecified Recommendations W/Figures, 1 January 1947 41719739075903.pdf
A70955 Request for Storage of Various Gauges and Gears, 24 February 1947 41719769075906.pdf
A70957 Estimated Cost of Items on Project #61, 19 February 1947 41719819075911.pdf
A70958 Storage Space, 12 February 1947 41719849075913.pdf
A70959 Packing Material for Cushioning Metal Barriers AS Relates to Project for Storing and Packing Cryptographic Machines, 3 February 1947 41719879075916.pdf
A70961 Storage of Teletype Equipment, 1 January 1947 41719889075917.pdf
A70964 Storage of Classified Communications Equipment, 13 November 1946 41719909075919.pdf
A70965 Request for Building T-602, 12 September 1946 41719929075921.pdf
A70978 Request for Storage Space, 27 August 1946 41719949075923.pdf
A70980 Storage of Rotors, 2 August 1946 41719969075925.pdf
A70982 Preparation of Cipher Machines for Extended Storage, 4 December 1945; ASA Memorandum 41719999075928.pdf
A70983 Storage Space for SIGSALY Terminal Equipment, 26 September 1945 41720009075929.pdf
A70984 War Reserve Equipment, 29 May 1945 41720029075931.pdf
A70985 War Reserve Equipment, 23 May 1945 41720039075932.pdf
A70992 Storage of Packages, 1 January 1944 41720059075934.pdf
A71264 Plans for S-11 Truck Type Oven Do Not Meet Agency Needs, 20 January 1948 41722029076129.pdf
A71266 War Reserve Stocks of Cryptographic Equipment, 12 December 1947 41722059076132.pdf
A71268 Requirements for an Electrically Heated Drying Oven, 5 November 1947 41722089076135.pdf
A71269 Laboratory Tests for Moisture Content of Wooden Boxes, 25 March 1947; National Bureau of Standards Report 41722109076137.pdf
A71272 Storage Space for Classified and/or Unclassified Material, 16 May 1945 41722129076139.pdf
(Folder ID: FOLDER 498) Photographs and Negatives, Enigma Printing Model and Non-Printing Model (R-27), 1954
Document ID Document Title Filename
A557666 Enigma Machine Photo 41784439082349.pdf
A557690 Key List for German Army Enigma Machine 41784329082337.pdf
A557702 Photograph of Probable Enigma Model R-27 Non-Printing Cipher Machine 41784479082353.pdf
A557710 Classification-Vol. 2, Flicke's War Secrets In the Ether 41784739082375.pdf
(Folder ID: FOLDER 501) SISDE-11 Drawings, 1931-1935
Document ID Document Title Filename
A557818 Drawings of Friedman/Rowlett Cryptographic Device, Application Serial No. 70,412 41784779082380.pdf
A557819 Patent 2,395,863, Cryptographic Device, William F. Friedman 41784699082372.pdf
(Folder ID: FOLDER 514) Description of the General Principles of an Invention of A Machine for Locating Idiomorphs and Isomorphs In Cryptanalysis, 1937-1938
Document ID Document Title Filename
A4146524 Description of the General Principles of an Investigation of A Machine for Locating Idiomorphs and Isomorphs In Cryptanalysis 41787859082686.pdf
A4146526 Invention of A Cryptanalytic Coincidence Counter 41787899082690.pdf
A4146528 Cipher Machine 41787949082695.pdf
A4146531 Mechanical Decoding and Preparation Procedures 41788259082726.pdf
(Folder ID: FOLDER 519) Memoranda Regarding Modification and Instruction Manual of the M-209, 1947-1949
Document ID Document Title Filename
A4146581 Comments Requested on Instruction Manual, Converter M-209 41789269082828.pdf
(Folder ID: FOLDER 520) Enigma Materials for Hand Method Attack with Paper Cipher Strips by Colonel Friedman, Arlington School, 1943-1945
Document ID Document Title Filename
A4146590 Enigma Materials for Hand Method Attack 41789319082833.pdf
A4146632 Wiring for E-Machine, AS Obtained from Coast Guard 41790129082914.pdf
(Folder ID: FOLDER 521) Memoranda Regarding Suggested Solution of Commercial Enigma, 1943
Document ID Document Title Filename
A4146658 Suggested Solution of Commercial Enigma 41790359082935.pdf
(Folder ID: FOLDER 527) Memoranda and Reports on Legislation and Patents Compiled by Friedman, 1937-1948
Document ID Document Title Filename
A4148465 Security Review of Patent Applications 41770909080999.pdf
A4148467 Receipt of Your Letter of 16 June 1948 Is Acknowledged 41770939081002.pdf
A4148468 File In Study of Patent Legislation for Secrecy 41770979081006.pdf
A4148469 Receipt of Your Letter of 24 May 1948 Is Acknowledged 41770999081008.pdf
A4148470 Patent Office Secrecy Orders 41771019081010.pdf
A4148471 Patent Office Secrecy Orders 41771049081013.pdf
A4148472 Report on Legislation Controlling Patents Important In the National Defense 41771059081014.pdf
A4148473 Proposed Security Measure 41771069081015.pdf
A4148474 Proposed Communication Security Measures 41771089081017.pdf
A4148475 Joint Army-Navy Patent Advisory Board 41771099081018.pdf
A4148476 80th Congress 2d Session H.R. 5740 41771119081020.pdf
A4148477 80th Congress 1st Session S. 1726 41771129081021.pdf
A4148478 80th Congress 1st Session H.R. 4420 41771139081022.pdf
A4148479 Filing of Patent Applications State-Army-Navy-Air Force Coordinating Committee 41771149081023.pdf
A4148480 Patents and Inventions 41771159081024.pdf
A4148481 Excerpt from Patent Laws 41771169081025.pdf
A4148482 Bulletin No. 10 War Department 41771179081026.pdf
A4148483 News Laws Act of August 1, 1946, Public Law No. 585 41771189081027.pdf
A4148484 Sec. 4894 R.S. U.S.C. Title 35 Sec. 37 41771209081028.pdf
A4148485 40 Stat. 394 41771219081030.pdf
A4148486 Termination of Wartime Statutes, Proclamations and Executive Orders 41771229081031.pdf
A4148487 Sanacc Paper 386/2 Published for Consideration of Departments Concerned 41771239081032.pdf
A4148488 Extract from: Federal Register, Volume 11, Number 242, Dec. 13, 1946 Executive Order 9809-Providing for the Disposition of Certain War Agencies 41771249081033.pdf
A4148489 Call Col. Shull 73934 8 April About Swancc Action 41771259081034.pdf
A4148490 Executive Order 9604 the New York Times, Tuesday, August 28, 1945 41771269081035.pdf
A4148491 Policy Concerning Distribution and Disclosure of Cryptographic Design of Converters M-134-A, and M-134-C 41771279081036.pdf
A4148492 Executive Order 9568 the New York Times, Sunday, June 10, 1945 41771289081037.pdf
(Folder ID: FOLDER 539) Communications and Cryptographic Equipment Research, 1934-1951
Document ID Document Title Filename
A4148563 Dr. Edgar Gretener A.G (Teletype and Telecrypto Apparatus) 41772209081129.pdf
A4148564 the Distinct System of Teletypewriters with Pulse Transmission Manufactured by Dr. Edgar Gretenar A.G. of Zurich, Switzerland 41772229081131.pdf
A4148565 Letter In Reference to A Cryptographic Device Which Apparently Is Capable of A High Degree of Security 41772259081134.pdf
A4148568 Permutation Switch Px Interchanges Calculations and Diagrams 41772279081136.pdf
A4148569 Swiss-Edgar Gretener Notes 41772299081138.pdf
A4148570 Dr. Edgar Gretener A.G. Notes 41772309081139.pdf
A4148572 Switch Diagrams 41772319081140.pdf
A4148573 Edgar Gretener Signaling Apparatus Drawings and Article 41772339081142.pdf
A4148575 Hagelin-Gretener System 41772359081144.pdf
A4148576 Telecrypto Apparatus Type Tkg 5/14 41772379081147.pdf
(Folder ID: FOLDER 540) Communication and Cryptographic Equipment Research, Etx Telewriter, 1949-1951
Document ID Document Title Filename
A4148577 New Hagelin Cipher Machine 41772409081149.pdf
A4148578 Memo Routing Slips As76 Under the Name Mr. Friedman 41772429081151.pdf
A4148579 Memo Routing Slip and Offer No. 407 for Telecryptic Samples 41772459081154.pdf
A4148580 AFSA-351 Apparatus Memorandum 41772479081156.pdf
A4148581 Written Notes Under the Name Kurt Ehrat 41772519081160.pdf
A4148582 Letter Concerning A Cryptographic Device Which Apparently Is Capable of A High Degree of Security 41772539081162.pdf
(Folder ID: FOLDER 542) Memoranda Regarding Authenticating Device, 1935-1944
Document ID Document Title Filename
A4148841 Invention of Authenticating Device for Commercial Usage 41780869081993.pdf
(Folder ID: FOLDER 543) Memoranda and Reports Regarding A Cipher Teleprinter, 1947-1950
Document ID Document Title Filename
A4148844 Call Memo for Captain Dyer and Major Sullivan 41780909081996.pdf
A4148845 Memo Routing Slip on System 41780939081999.pdf
A4148846 the Hagelin-Gretener Cipher Teleprinter 41780979082003.pdf
A4148847 the Hagelin-Gretener Cipher Teleprinter 41781009082006.pdf
A4148848 Numbered Cipher Codes 41781049082013.pdf

Folder ID: (FOLDER 544) - Folder not releasable

(Folder ID: FOLDER 545) Correspondence on Printer Telegraph Cipher Machines, 1919-1935
Document ID Document Title Filename
A4148851 Receipt of Letter In Reference to the Junking of the Old Printer Telegraph Cipher Machines 41781099082015.pdf
A4148853 Notes and Letter to Major William P. Friedman on Old Printer Telegraph Cipher Machines 41781119082017.pdf
A4148856 Letter to Major William P. Friedman on "Cipher Printing Telegraph Systems" 41781159082021.pdf
A4148857 Cipher Printing Telegraph Systems 41781179082023.pdf
A4148858 Cipher Printing Telegraph System 41781209082026.pdf
A4148859 Letter Regarding the Question of A Distinguished Service Medal for Colonel George Fabyan 41781229082028.pdf
A4148860 Letter to General Churchill 41781319082037.pdf
A4148861 Letter to General Churchill 41781339082039.pdf
A4148862 Letter on Proposed Modifications of the Method Used by the at & T Cipher Printing Machine 41781349082040.pdf
A4148863 Letter Addressed to Colonel Fabyan 41781379082043.pdf
A4148864 Letter to Colonel Fabyan 41781409082047.pdf
A4148865 Letter to Colonel Mauborgne 41781439082049.pdf
A4148866 Letter to Colonel Fabyan on 150 Cipher Tapes 41781459082051.pdf
A4148867 Letter to Colonel Fabyan 41781479082053.pdf
A4148868 Letter to Colonel Fabyan 41781499082055.pdf
A4148872 Letter to General Churchill on Riverbank Conference 41781519082057.pdf
A4148873 Letter to Major Crockett 41781529082058.pdf
A4148874 Letter to General Churchill 41781549082060.pdf
A4148875 Letter to Colonel Mauborgne 41781559082061.pdf
A4148877 Letter to Colonel Mauborgne 41781579082063.pdf
A4148880 the Development of an Indecipherable Printing-Telegraph for Military Purposes 41781589082064.pdf
A4148881 Letter to General Squier on Suspension of All Operations for Signal Corps 41781599082065.pdf
A4148882 Printing Telegraph Cipher 41781619082067.pdf
A4148883 Letter to Colonel George Fabyan 41781649082070.pdf
A4148884 Western Union Telegram to General Squier 41781669082072.pdf
A4148885 Printing Telegraph Ciphers 41781689082075.pdf
A4148886 Memorandum to Colonel Fabyan 41781729082078.pdf
A4148887 Letter to General Squier 41781759082081.pdf
A4148888 Telegram to Colonel George Fabyan 41781799082085.pdf
A4148889 Western Union Telegram to General Squier 41781839082089.pdf
A4148890 Telegram to Colonel George Fabyan on Cipher Machine 41781869082092.pdf
A4148891 Letter to Colonel Fabyan 41781919082097.pdf
A4148892 Letter to General Churchill 41781949082100.pdf
A4148893 Letter to General Churchill 41781979082103.pdf
A4148894 Letter to George Fabyan 41782009082106.pdf
A4148895 Telegram to Colonel George Fabyan 41782039082109.pdf
A4148896 Letter to Colonel Fabyan on the at & T Cipher Machine 41782069082112.pdf
A4148897 Letter to General Churchill 41782089082114.pdf
A4148898 Telegram to Major H.O. Yardley 41782119082117.pdf
A4148900 Telegram to George Fabyan 41782139082119.pdf
A4148901 Letter to General Churchill 41782159082121.pdf
A4148902 Letter to George Fabyan on at & T Cipher 41782199082125.pdf
A4148903 Letter to Mr. George Fabyan Concerning American Telephone and Telegraph Company Cipher 41782219082127.pdf
A4148904 Letter to Mr. George Fabyan 41782249082130.pdf
A4148905 Printing Telegraph Cipher Arrangement 41782279082133.pdf
A4148907 Report on Cipher Printer Telegraph 41782469082152.pdf
A4148908 Letter to Colonel Fabyan on the at & T Cipher Printing Telegraph System 41787049082605.pdf
A4148909 Letter to Colonel Fabyan 41782749082180.pdf
A4148910 Letter to Mr. Bancroft Gherardi 41782869082192.pdf
A4148911 Letter to Colonel George Fabyan 41782889082194.pdf
A4148912 Letter to Colonel Fabyan 41782909082196.pdf
A4148913 Letter to Captain Ferrell 41782939082199.pdf
A4148915 Report by Captain J.A. Powell to the M.I.D. on the Ability of Riverbank to Decipher Messages of the A.T. & T. Cipher System 41782969082202.pdf
A4148916 the American Telephone and Telegraph Cipher System 41782989082204.pdf
A4148917 the Breaking of the Printing Telegraph Cipher 41783019082207.pdf
A4148918 General Dowling Marching Orders 41783039082209.pdf
A4148919 the T. and T. Cipher 41783069082212.pdf
A4148920 Printing Telegraph Cipher Arrangement 41783099082215.pdf
A4148922 Letter to Captain John Manly 41783129082218.pdf
A4148923 Memorandum for M.I.D., General Staff, Attention Captain Manley on the Printing Telegraph Cipher Apparatus by the A.T. and T. Company 41783159082221.pdf
A4148924 the T. and T. Cipher System 41783179082223.pdf
A4148925 the Ciphers Sent for Preparation on the Cipher Printing Telegraph Device 41783209082225.pdf
A4148926 Letter to Colonel Mauborgne 41783229082227.pdf
A4148927 Translated Messages Prepared by the American Telegraph and Telephone Company on the Cipher Printing Telegraph Apparatus 41783249082229.pdf
A4148928 Printing Telegraph Cipher Message 41783269082231.pdf
A4148929 Letter to Colonel J.O. Mauborgne 41783299082235.pdf
A4148930 Letter to Colonel Fabyan 41783309082236.pdf
A4148931 Letter to Colonel Fabyan 41783329082238.pdf
A4148932 Letter to Colonel Mauborgne In Reference to Ciphering Machine 41783349082240.pdf
A4148933 Cipher Printer, A.T. and T. CO 41783369082242.pdf
A4148934 Ciphered Messages Prepared for Col. Fabyan of Chicago 41783459082251.pdf
(Folder ID: FOLDER 546) Correspondence on Printer Telegraph Cipher Machines, 1921
Document ID Document Title Filename
A4148935 Memorandum for Major Bender on the Modifications Proposed for Making the Printing Telegraph Cipher Safe for the Use of the Army 41783489082254.pdf
A4148936 Charts on Ciphered Codes 41783509082256.pdf
A4148937 Multiplex Perforator Tape 41783519082257.pdf
A4148938 Key Tapes Paper 41783529082258.pdf
A4148939 Regulations for the Test of the Printing Telegraph Cipher 41783539082259.pdf
A4148941 Operating Instructions for Local Operating Sets 41783559082261.pdf
A4148942 Operating Instructions for Line Operating Sets 41783579082263.pdf
A4148943 Operation of Cipher Printing Telegraph Apparatus 41783599082265.pdf
A4148945 Regulations for the Test of the Printing Telegraph Cipher 41783619082267.pdf
A4148946 Cipher Printing Telegraph 41783639082269.pdf
A4148947 Memorandum Fro Lt. Col. J.O. Mauborgne on Mechanical Four Unit Ciphering Device 41783659082271.pdf