Glenn S. Danford

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Oklahoma City, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic call forwarding telephone apparatus
- Patent number 4,413,158
- Issue date Nov 1, 1983
- Glenn S. Danford
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system
- Patent number 4,329,543
- Issue date May 11, 1982
- Southwest Utilities, Inc.
- Glenn S. Danford
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hands-free talk-back intercommunication system
- Patent number 4,308,427
- Issue date Dec 29, 1981
- Southwest Utilities, Inc.
- Glenn S. Danford
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hazardous voltage protection circuitry
- Patent number 4,194,230
- Issue date Mar 18, 1980
- Southwest Utilities, Inc.
- Glenn S. Danford
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Interconnect control for automatically connecting a simplex or half...
- Patent number 4,082,919
- Issue date Apr 4, 1978
- IEC Electronics Corporation
- Willis E. Day
- H04 - ELECTRIC COMMUNICATION TECHNIQUE