Safes – bank protection – or a related device – Combined – With alarm – signal or indicator
Patent
1976-04-30
1977-11-29
Gilliam, Paul R.
Safes, bank protection, or a related device
Combined
With alarm, signal or indicator
109 38, G08B 1300, E05G 110
Patent
active
040600408
ABSTRACT:
An antishoplifting system for premises in which goods are sold and in which signal transmitters are affixed to the articles of goods. Each of the transmitters has a continuously effective first signal emitter which cooperates with a detector at the entrance or exit of the premises to signal removal of an article with the transmitter thereon. In addition, each transmitter comprises a self-contained second signal emitter, which requires no external energy source and is activatable upon removal of the transmitter from the goods to emit a signal. Receivers on the premises detect this signal and produce an output indicating the location of the source thereof.
REFERENCES:
patent: 1049783 (1913-01-01), van Pee
patent: 1198581 (1916-09-01), Ritchel
patent: 2273440 (1942-02-01), Gould
Corbin David H.
Gilliam Paul R.
Ross Karl F.
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