David B. Hughes

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Hudson, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Circuit for selecting and locking in operation function circuitry
- Patent number 4,667,307
- Issue date May 19, 1987
- Digital Equipment Corporation
- Thomas C. Porcher
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Arrangement for providing data signals for a data display system
- Patent number 4,625,203
- Issue date Nov 25, 1986
- Digital Equipment Corporation
- Robert S. DiNitto
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS