Clifford J. Hoffman

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Dayton, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Interactive overlay-driven computer display system
- Patent number 5,250,929
- Issue date Oct 5, 1993
- Conference Communications, Inc.
- Clifford J. Hoffman
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Interactive overlay driven computer display system
- Patent number 5,010,323
- Issue date Apr 23, 1991
- Clifford J. Hoffman
- G06 - COMPUTING CALCULATING COUNTING