Methods and apparatus for a security system

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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C340S573300, C340S573400, C340S568200, C340S539100, C340S539110, C340S539150

Reexamination Certificate

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06989752

ABSTRACT:
Described are methods and apparatus for a security system. In one embodiment, the system includes capabilities to aid in locating an item that is being monitored when the item's location is unknown. The embodiment also includes capabilities for sounding an alarm when the item is believed to be missing.

REFERENCES:
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patent: 5612675 (1997-03-01), Jennings et al.
patent: 5652569 (1997-07-01), Gerstenberger et al.
patent: 5742233 (1998-04-01), Hoffman et al.
patent: 5900817 (1999-05-01), Olmassakian
patent: 5923255 (1999-07-01), Vahadatshoar
patent: 5936529 (1999-08-01), Reisman et al.
patent: 5936530 (1999-08-01), Meinhold
patent: 6025779 (2000-02-01), Huang
patent: 6028519 (2000-02-01), Dessureau et al.
patent: 6281800 (2001-08-01), Sizemore
U.S. Appl. No. 60/303,647, Filed Jul. 7, 2001.

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