Leo V. Jones Jr.

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Glendale, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
DTMF receiver sense and control maintenance arrangement
- Patent number 4,621,354
- Issue date Nov 4, 1986
- GTE Communication Systems Corporation
- Leo V. Jones
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF receiver sense and control arrangement
- Patent number 4,611,325
- Issue date Sep 9, 1986
- GTE Communication Systems Corporation
- Leo V. Jones
- H04 - ELECTRIC COMMUNICATION TECHNIQUE