John G. Feuz

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Portland, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Double check valve backflow preventer assembly
- Patent number 5,031,661
- Issue date Jul 16, 1991
- Buckner, Inc.
- John G. Feuz
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Double check valve backflow preventer assembly
- Patent number 4,893,654
- Issue date Jan 16, 1990
- John G. Feuz
- E03 - WATER SUPPLY SEWERAGE