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Bret A. Cooper
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Columbus, OH, US
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last 30 patents
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Patent Grant
Telephone call monitoring method and apparatus
Patent number
5,740,234
Issue date
Apr 14, 1998
AT&T Corp.
James Edward Black
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key telephone management system
Patent number
4,905,274
Issue date
Feb 27, 1990
American Telephone and Telegraph Company AT&T Bell Laboratories
Bret A. Cooper
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Interexchange carrier automatic route selection system
Patent number
4,866,763
Issue date
Sep 12, 1989
American Telephone and Telegraph Company, AT&T Bell Laboratories
Bret A. Cooper
H04 - ELECTRIC COMMUNICATION TECHNIQUE