Richard Frank Mitchell

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Kingston, EN

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Patents Grantslast 30 patents

Information Patent Grant
Acoustic surface wave devices
- Patent number 4,072,915
- Issue date Feb 7, 1978
- U.S. Philips Corporation
- Richard F. Mitchell
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electrical filters including coupled resonators
- Patent number 4,065,735
- Issue date Dec 27, 1977
- U.S. Philips Corporation
- John S. Palfreeman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Acoustic surface wave devices
- Patent number 3,983,515
- Issue date Sep 28, 1976
- U.S. Philips Corporation
- Richard Frank Mitchell
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Acoustic surface-wave devices
- Patent number 3,968,461
- Issue date Jul 6, 1976
- U.S. Philips Corporation
- Richard Frank Mitchell
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Acoustic surface-wave devices using mono crystalline bismuth silico...
- Patent number 3,956,647
- Issue date May 11, 1976
- U.S. Philips Corporation
- Richard Frank Mitchell
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Acoustic surface wave devices
- Patent number 3,955,159
- Issue date May 4, 1976
- U.S. Philips Corporation
- Richard Frank Mitchell
- H03 - BASIC ELECTRONIC CIRCUITRY