Richard Piehl

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San Ramon, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for storing electric power measurements
- Patent number 5,581,471
- Issue date Dec 3, 1996
- Alexander McEachern
- G01 - MEASURING TESTING
Information Patent Grant
Impulse direction detector for ac power systems
- Patent number 5,270,637
- Issue date Dec 14, 1993
- Basic Measuring Instruments
- Alexander McEachern
- G01 - MEASURING TESTING