Ray G. Jackson

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Indianapolis, IN, US

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Patents Grantslast 30 patents

Information Patent Grant
Coin telephone protection device
- Patent number 5,978,474
- Issue date Nov 2, 1999
- Lucent Technologies Inc.
- Raymond Gene Jackson
- G07 - CHECKING-DEVICES
Information Patent Grant
Pay telephone
- Patent number D402983
- Issue date Dec 22, 1998
- Lucent Technologies, Inc.
- Ronald L. Wild
- D14 - Recording, communication, or information retrieval equipment
Information Patent Grant
Digital-to-analog converter
- Patent number 4,539,552
- Issue date Sep 3, 1985
- AT&T Bell Laboratories
- Paul C. Davis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronically-switched multifrequency generator with transducer co...
- Patent number 4,352,958
- Issue date Oct 5, 1982
- Bell Telephone Laboratories, Incorporated
- Paul C. Davis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Active speech network circuit for a telephone set
- Patent number 4,332,984
- Issue date Jun 1, 1982
- Bell Telephone Laboratories, Incorporated
- Paul C. Davis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE