Teletype mixer apparatus for coding and decoding

Details Teletype mixer apparatus for coding and decoding Teletype mixer apparatus for coding and decoding

1966-05-26

1980-03-11

Birmiel, Howard A.

Telegraphy

Systems

Printing

H04L 902

Patent

active

041929675

ABSTRACT:
Apparatus for terminating teletype signal lines and mixing cryptographic teletype signals to furnish an enciphered teletype signal including a secondary operating mode of the mixer unit to retransmit the incoming teletype signal in the event enciphering or deciphering is not required.

REFERENCES:
patent: 2401855 (1946-06-01), Briggs et al.
patent: 2872514 (1959-02-01), Negri
patent: 3229037 (1966-01-01), Sturzinger et al.
patent: 3291908 (1966-12-01), Ehrat

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