Patent US3546380 - CIPHERING AND DECIPHERING APPARATUS

Patents

Inventors: Oskar Sturzinger Bur Zurich, Oskar Sturzinger Bur Zurich
Current U.S. Classification: 380/33; 361/171; 380/43

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Citing Patent	Filing date	Issue date	Original Assignee	Title
US4176246	Mar 14, 1978	Nov 27, 1979	Anstalt Europaische Handelsgesellschaft	Apparatus for the transmission end-enciphering and reception end-deciphering of information
US4329545	Feb 19, 1976	May 11, 1982	Siemens Aktiengesellschaft	Circuit arrangement for the control of semi-duplex data transmission system