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US Patent 7693080 Network loop monitor

Patent 7693080 was granted and assigned to GE Security on April, 2010 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee
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GE Security
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
76930800
Patent Inventor Names
David Denoon-Stevens0
Neels Paul De Villiers0
Date of Patent
April 6, 2010
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Patent Application Number
105967170
Date Filed
December 21, 2004
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Patent Primary Examiner
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Huy D. Vu
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Patent abstract

A network loop monitor (10) is disclosed which comprises an RS485 port (16) for connection to a host which receives and transmits data. The port (16) comprises termination jumpers (14), a transmitter/receiver (34) and an isolator (36). The monitor (10) includes two further RS485 ports (18, 20) each of which has a termination (26, 28), a transmitter/receiver (42, 44) and an isolator (38, 40). A relay (22) controls contacts (24) in the line pair (12). Router logic (32) controlled by a microprocessor (30) determines the status of the loop monitor.

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