Duncan Bruce

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Renssalaer, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Data bridge with gating and/or testing
- Patent number 4,538,033
- Issue date Aug 27, 1985
- Conklin Instrument Corporation
- Duncan Bruce
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF Activated remote telephone line switching and testing
- Patent number 4,403,119
- Issue date Sep 6, 1983
- Conklin Instrument Corporation
- Charles E. Conklin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Remote telephone line switching and testing
- Patent number 4,258,236
- Issue date Mar 24, 1981
- Conklin Instrument Corporation
- Charles E. Conklin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE