Thomas L. Helmers

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Millbrae, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Interactive rotary controller system with tactile feedback
- Patent number 5,189,355
- Issue date Feb 23, 1993
- Ampex Corporation
- David N. Larkins
- G05 - CONTROLLING REGULATING
Information Patent Grant
Method and apparatus for transporting a recording medium with an ad...
- Patent number 4,731,679
- Issue date Mar 15, 1988
- Ampex Corporation
- David C. O'Gwynn
- G11 - INFORMATION STORAGE
Information Patent Grant
Adaptive end of tape detection apparatus and method
- Patent number 4,561,608
- Issue date Dec 31, 1985
- Ampex Corporation
- David C. O'Gwynn
- G11 - INFORMATION STORAGE