Title:
Remote alarm system with scanning by tones
United States Patent 3256517
US Patent References:
Data transmission system
- - 2499225
Remote-control and supervisory control system
- - 2664554
Remote signal systems
- - 3107340
Security-line-surveillance system
- - 3131376
Data transmission system
- - 2499225
Remote-control and supervisory control system
- - 2664554
Remote signal systems
- - 3107340
Security-line-surveillance system
- - 3131376
Inventors:
Theodore, Saltzberg
Wiilyard, Charles H.
Wiilyard, Charles H.
Publication Date:
06/14/1966
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Export Citation:
Assignee:
MOTOROLA INC
Primary Class:
Other Classes:
340/539.100, 340/3.600, 340/3.550, 340/3.700, 340/539.160
International Classes:
G08B26/00