Title:
Apparatus for enciphering-deciphering teleprinter communications
United States Patent 3051783
US Patent References:
Enciphering device
- - 2785224

Two-tape cipher system
- - 2874215

/2899498.html
- - 2899498


Inventors:
Rudolf, Hell
Roman, Koll
Publication Date:
08/28/1962
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Assignee:
Rudolf, Hell Kommanditgesellsch
Primary Class:
380/47
International Classes:
G06F7/58; G09C1/12; H04L9/18; H04L9/22; H04L9/38; G09C1/06