John B. Berkheimer

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Tempe, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Dual deck videocassette recorder system
- Patent number 5,194,963
- Issue date Mar 16, 1993
- Go-Video, Inc.
- R. Terren Dunlap
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual deck videocassette recorder system
- Patent number 5,124,807
- Issue date Jun 23, 1992
- Go-Video, Inc.
- R. Terren Dunlap
- G11 - INFORMATION STORAGE