Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-02-22
1991-03-19
Woodiel, Donald O.
Communications: electrical
Condition responsive indicating system
Specific condition
340691, 340539, G08B 1314
Patent
active
050014609
ABSTRACT:
A system for protecting portable articles from unwanted use. The system includes a portable transmitter external to the article for transmitting coded signals of fixed radio frequency pulses to an electronic mechanism installed in the article. The mechanism includes a mode selector for operating the system in a first, second or third mode. There is also a device for activating an electronic flash, an alarm or other similar protective mechanisms during any of the modes, and a device for neutralizing the activating device.
REFERENCES:
patent: 4117468 (1978-09-01), Vasquez
patent: 4591835 (1986-05-01), Sharp
patent: 4804943 (1989-02-01), Soleimani
A.B.N. Trap Alarm Systems Ltd.
Sutcliffe Geoff
Woodiel Donald O.
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