Communications – electrical: acoustic wave systems and devices – Sonar counter-measures
Patent
1967-06-29
1994-04-05
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Sonar counter-measures
114 212, H04K 300
Patent
active
053011660
ABSTRACT:
A remote control system protected against enemy take-over and particularly uited for the undersea control of acoustic decays and torpedoes. System includes dual electronics systems. Command signal includes plurality of frequencies which disable one of dual systems and energizes the other system.
REFERENCES:
patent: 1546579 (1925-07-01), Hammond, Jr.
patent: 2396091 (1946-03-01), DeBey
patent: 2413066 (1946-12-01), Purington
patent: 3148651 (1964-09-01), Ray
patent: 3212054 (1965-10-01), Gardner
McDonnell Thomas E.
Pihulic Daniel T.
The United States of America as represented by the Secretary of
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