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Title:
Apparatus for enciphering-deciphering teleprinter communications
United States Patent 3051783
Inventors:
Rudolf, Hell
Roman, Koll
Publication Date:
08/28/1962
Assignee:
Rudolf, Hell Kommanditgesellsch
Primary Class:
International Classes:
G06F7/58; G09C1/12; H04L9/18; H04L9/22; H04L9/38
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