David J. Mate

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San Diego, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Two-wire transmitter
- Patent number 4,242,665
- Issue date Dec 30, 1980
- Action Instruments Company, Inc.
- David J. Mate
- G08 - SIGNALLING
Information Patent Grant
Two wire flow rate transmitter
- Patent number 4,238,965
- Issue date Dec 16, 1980
- Action Instruments Company, Inc.
- David J. Mate
- G01 - MEASURING TESTING
Information Patent Grant
Electrical musical instrument with automatic sequential tone genera...
- Patent number 3,941,024
- Issue date Mar 2, 1976
- Warwick Electronics, Inc.
- John R. Brand
- G10 - MUSICAL INSTRUMENTS ACOUSTICS