Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-07-18
1990-06-19
Orsino, Joseph A.
Communications: electrical
Condition responsive indicating system
Specific condition
340687, G08B 1314
Patent
active
049357255
ABSTRACT:
A device security system which includes an electrical receptacle having a plurality of outlet locations and a modular socket removably engageable with the outlet locations of the receptacle. With the socket engaged with the receptacle it is adapted to receive a plug. An alarm is coupled to the receptacle and is activated in response to removal of the socket or the plug.
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patent: 4654640 (1987-03-01), Carll et al.
patent: 4658242 (1987-04-01), Zeder
patent: 4688135 (1987-08-01), Leopold
patent: 4746909 (1988-05-01), Israel et al.
British Columbia Telephone Co.
Mullen Jr. Thomas J.
Orsino Joseph A.
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