John D. Foulkes

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Kirkland, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Audio and full duplex digital data carrier system
- Patent number 4,330,687
- Issue date May 18, 1982
- Teltone Corporation
- John D. Foulkes
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital data transmission system
- Patent number 4,302,629
- Issue date Nov 24, 1981
- Teltone Corporation
- John D. Foulkes
- H04 - ELECTRIC COMMUNICATION TECHNIQUE