James A. Stewart

Person

Menlo Park, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Power supply control circuit for subscriber carrier telephone system
- Patent number 4,380,687
- Issue date Apr 19, 1983
- GTE Automatic Electric Laboratories, Inc.
- James A. Stewart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Power supply control circuit for subscriber carrier telephone system
- Patent number 4,374,303
- Issue date Feb 15, 1983
- GTE Automatic Electric Laboratories, Inc.
- James A. Stewart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Carrier subscriber telephone station terminal loop current booster
- Patent number 4,158,752
- Issue date Jun 19, 1979
- GTE Automatic Electric Laboratories Incorporated
- James A. Stewart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ringer power generator circuit for carrier subscriber station terminal
- Patent number 4,152,546
- Issue date May 1, 1979
- GTE Automatic Electric Laboratories, Inc.
- James A. Stewart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Power supply control circuit for subscriber carrier telephone system
- Patent number 4,145,572
- Issue date Mar 20, 1979
- GTE Automatic Electric Laboratories, Inc.
- James A. Stewart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus employing a pulsed carrier in generating singl...
- Patent number 4,127,746
- Issue date Nov 28, 1978
- GTE Automatic Electric Laboratories, Incorporated
- James A. Stewart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic disconnect circuit for subscriber carrier telephone system
- Patent number 3,934,089
- Issue date Jan 20, 1976
- GTE Automatic Electric Laboratories Incorporated
- James A. Stewart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

James A. Stewart

Person

Patents Grantslast 30 patents

Power supply control circuit for subscriber carrier telephone system

Power supply control circuit for subscriber carrier telephone system

Carrier subscriber telephone station terminal loop current booster

Ringer power generator circuit for carrier subscriber station terminal

Power supply control circuit for subscriber carrier telephone system

Method and apparatus employing a pulsed carrier in generating singl...

Automatic disconnect circuit for subscriber carrier telephone system