G - Physics – 08 – B
Patent
G - Physics
08
B
325/44
G08B 13/08 (2006.01) G07C 9/00 (2006.01) G08B 13/18 (2006.01)
Patent
CA 1258693
Abstract of the Disclosure A security sensing system for monitoring the passage of persons through a door or like opening including a trigger module having means for transmitting an omnidirectional signal installed on persons to be monitored and a sensing module for installing adjacent to a door opening to be monitored, the sensing module including means for producing a response to operate an alarm but only when the door is opened by a person equipped with a trigger module on his person.
520934
Central Security Mfg. Corp.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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