Radio controlled lock
United States Patent 3168737
US Patent References:
Passive radio communication system
- - 2812427


Inventors:
Richard, Weinstein
Publication Date:
02/02/1965
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Assignee:
COMMERICAL FACTORS LTD
Primary Class:
340/825.720
Other Classes:
341/176, 340/825.750, 70/277, 331/113R, 331/52, 340/5.620
International Classes:
G07C9/00