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Douglas C. Wadsworth
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Manotick, CA
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last 30 patents
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Patent Grant
FET bidirectional switching arrangements and methods for preventing...
Patent number
5,287,024
Issue date
Feb 15, 1994
Northern Telecom Limited
Douglas C. Wadsworth
H03 - BASIC ELECTRONIC CIRCUITRY
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Patent Grant
Speaker drive arrangement for loudspeaker telephone
Patent number
5,027,392
Issue date
Jun 25, 1991
Northern Telecom Limited
Terence N. Thomas
H04 - ELECTRIC COMMUNICATION TECHNIQUE