Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-09-05
1997-07-01
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
340571, 340665, G08B 1314
Patent
active
056442955
ABSTRACT:
The present invention relates to a security device for fixing to a surface to allow relative movement of the device and the surface to be detected, and a connector for such a device.
REFERENCES:
patent: 4000488 (1976-12-01), Ephraim
patent: 4006336 (1977-02-01), Boyden
patent: 4772878 (1988-09-01), Kane
patent: 5012225 (1991-04-01), Gill
patent: 5092788 (1992-03-01), Pristupa, Jr. et al.
patent: 5237307 (1993-08-01), Gritton
Connolly Raymond Edwin
Griffiths Jonathan James Whittington
Hofsass Jeffery
Lee Benjamin C.
Permasign Limited
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