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Matthew F. Kern
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Laurel, MD, US
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last 30 patents
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Patent Grant
Method and apparatus for determining when a telephone handset is of...
Patent number
4,958,371
Issue date
Sep 18, 1990
Control Data Corporation
Joseph A. Damoci
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Distributed monitoring system
Patent number
4,912,552
Issue date
Mar 27, 1990
Control Data Corporation
Arthur W. Allison
H04 - ELECTRIC COMMUNICATION TECHNIQUE