Donald J. Gray

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Lynnfield, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Digital switching system with two-directional addressing rams
- Patent number 4,736,361
- Issue date Apr 5, 1988
- GTE Laboratories Incorporated
- Michael Cooperman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital switching system
- Patent number 4,656,621
- Issue date Apr 7, 1987
- GTE Laboratories Incorporated
- Michael Cooperman
- G11 - INFORMATION STORAGE