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Ronald J. Hagen
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Livermore, CA, US
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last 30 patents
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Patent Grant
Integrated voice and data telephone system
Patent number
4,932,022
Issue date
Jun 5, 1990
Telenova, Inc.
Clare G. Keeney
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Automatic compensation circuit and method
Patent number
4,407,020
Issue date
Sep 27, 1983
TRW Inc.
Bradley A. Helliwell
H04 - ELECTRIC COMMUNICATION TECHNIQUE