Arthur L. Walsh

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Phoenix, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Integrated services digital network module
- Patent number 4,866,703
- Issue date Sep 12, 1989
- AG Communication Systems Corporation
- James B. Black
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital voice switch for a multi-port conference circuit
- Patent number 4,794,591
- Issue date Dec 27, 1988
- GTE Communication Systems Corporation
- James Hoff
- H04 - ELECTRIC COMMUNICATION TECHNIQUE