David M. Gresham

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East Hampton, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Menu level indicator for a telephone terminal
- Patent number 5,841,855
- Issue date Nov 24, 1998
- Lucent Technologies Inc.
- Joanne W. Davidson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hierarchical menu screen interface for displaying and accessing tel...
- Patent number 5,774,540
- Issue date Jun 30, 1998
- Lucent Technologies Inc.
- Joanne W. Davidson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE