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W.F.F. Archive
Patent and Equipment Records
Memoranda and Working Notes, List of Patents on Electro-Mechanical Cipher Machines Pertinent to the Hebern Case, 1949
List of Patents Relating to the Hebern Case
Document A273714
203.04 KiB
PDF
Notes on Patents (Relating to the Hebern Case)
Document A273725
238.48 KiB
PDF
Notes on Patents (Relating to the Hebern Case)
Document A273728
242.15 KiB
PDF
Notes on Patents (Relating to the Hebern Case)
Document A273732
192.88 KiB
PDF
Notes on Patents Relating to the Hebern Case
Document A273720
639.14 KiB
PDF
Patents on Electro-Mechanical Cipher Machines
Document A2436316
164.83 KiB
PDF
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