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Files W.F.F. Archive Patent and Equipment Records Patent File, SISDE-11 Friedman and Rowlett Self-Controlled Cryptographs, Serial No. 70,412, 1935-1953
A Means of Providing an Irregular Wheel Movement In Cipher Machines Using Cipher Wheels-Rowlett
Document A39823
150.3 KiB
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Amendment to Patent Application for Cryptographs-Friedman and Rowlett
Document A39677
330.19 KiB
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Amendment to Patent Application for Cryptographs-Friedman and Rowlett
Document A39678
196.92 KiB
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Amendment to Patent Application for Cryptographs-Friedman and Rowlett
Document A39682
79.02 KiB
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Communication from Examiner AS Regards Patent Application for Cryptographs-Friedman and Rowlett
Document A39672
46.36 KiB
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Concurrence Re R&D Memo
Document A39737
19.22 KiB
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Converter Type M-134-T2-Friedman and Rowlett
Document A39762
56.65 KiB
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Converter Type M-134-T2-Friedman and Rowlett
Document A39767
81.99 KiB
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Description of Cryptographic Machine-Friedman
Document A39701
77.19 KiB
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Hand Written Note on Cryptographs-Friedman
Document A39710
36.37 KiB
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Invention of Mechanical-Electrical Control of Cipher Wheels for Small Cryptograph-Friedman
Document A39777
134.07 KiB
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Patent Application for Cryptographs-Friedman
Document A39619
104.82 KiB
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Patent Application for Cryptographs-Friedman
Document A39629
119.91 KiB
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Patent Application for Cryptographs-Friedman
Document A39671
91.5 KiB
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Patent Application for Cryptographs-Friedman
Document A39692
39.21 KiB
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Patent Application for Cryptographs-Friedman
Document A39707
65.18 KiB
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Patent Application for Cryptographs-Friedman
Document A39712
65.2 KiB
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Patent Application for Cryptographs-Friedman
Document A39726
115.63 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39633
41.08 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39638
30.68 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39666
35.59 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39668
29.62 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39669
40.46 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39670
288.76 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39673
163.2 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39675
30.73 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39676
42.44 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39683
27.1 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39703
34.09 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39705
50.34 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39732
44.75 KiB
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Patent Application for Cryptographs-Friedman and Rowlett
Document A39736
19.58 KiB
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Patent Application for Improvement In Cryptographs-Friedman and Rowlett
Document A39721
72.29 KiB
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Patent Application for Improvements In Cryptographs-Friedman
Document A39755
828.31 KiB
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Patent Application for Improvements In Cryptographs-Friedman
Document A39757
445.75 KiB
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Patent Application for Improvements In Cryptographs-Friedman and Rowlett
Document A39686
38.83 KiB
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Patent Application for Improvements In Cryptographs-Friedman and Rowlett
Document A39729
54.95 KiB
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Patent Application for Improvements In Cryptographs-Friedman and Rowlett
Document A39730
45.51 KiB
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Patent Application for Improvements In Cryptographs-Friedman and Rowlett
Document A39735
40.84 KiB
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Patent Application for Improvements In Cryptographs-Friedman and Rowlett
Document A39740
38.22 KiB
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Patent Application for Improvements In Cryptographs-Friedman and Rowlett
Document A39742
81.32 KiB
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Patent Application for Improvements In Cryptographs-Friedman and Rowlett
Document A39748
70.36 KiB
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Patent Application for Improvements In Cryptographs-Friedman and Rowlett
Document A39751
1.1 MiB
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Patent Application, Ser. No. 70,412, Filed March 25, 1936, Improvement In Cryptographs
Document A39750
35.02 KiB
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Patent Modifications for Cryptographs-Friedman
Document A39625
115.49 KiB
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Record of Inventions-Cryptographic Rotors
Document A39622
80.22 KiB
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Record of Military Invention-Improvements In Cryptographs-Friedman and Rowlett
Document A39770
139.2 KiB
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Routing and Work Sheet-Improvements In Cryptographs-Friedman and Rowlett
Document A39771
120.1 KiB
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Routing and Work Sheet-Patent Application for Cryptographs-Friedman and Rowlett
Document A39674
32.48 KiB
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Secrecy Order for Patent Application for Cryptographs-Friedman and Rowlett
Document A39641
153.48 KiB
PDF
Specifications and Six Drawing-Improvements In Cryptographs-Friedman
Document A39774
1.27 MiB
PDF
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