Michael David Wigzell

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Waterloo, CA

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Patents Grantslast 30 patents

Information Patent Grant
Air valve assembly for a fire hydrant
- Patent number 6,966,332
- Issue date Nov 22, 2005
- Michael David Wigzell
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
Air valve assembly for a fire hydrant
- Publication number 20050067016
- Publication date Mar 31, 2005
- Michael David Wigzell
- E03 - WATER SUPPLY SEWERAGE