David H. Shepard

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Rye, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for obtaining information in a wide-area telep...
- Patent number 5,052,038
- Issue date Sep 24, 1991
- Cognitronics Corporation
- David H. Shepard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for obtaining information in a wide-area telep...
- Patent number 4,782,509
- Issue date Nov 1, 1988
- Cognitronics Corporation
- David H. Shepard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE