William E. Hearn

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Berkeley, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Precision absolute value amplifier for a precision voltmeter
- Patent number 4,518,877
- Issue date May 21, 1985
- The United States of America as represented by the United States Department o...
- William E. Hearn
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Touch controlled voltage-divider device
- Patent number 3,968,467
- Issue date Jul 6, 1976
- Lampen; Stephen H.
- Stephen H. Lampen
- G01 - MEASURING TESTING