发明名称 Surveillance alarm-security system
摘要 An alarm-security system for maintaining surveillance of an individual. When unauthorized departure of an individual from a defined secure area is detected, the alarm-security system generates departure signals which are transmitted to a control center where alarm signals are initiated. In one embodiment of the system an alarm-secure band is carried on the person and cannot be removed from the person without generating alarm signals.
申请公布号 US4777477(A) 申请公布日期 1988.10.11
申请号 US19870042835 申请日期 1987.04.27
申请人 WATSON, RONALD R. 发明人 WATSON, RONALD R.
分类号 G08B21/22;G08B25/01;(IPC1-7):G08B23/00 主分类号 G08B21/22
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