Henry Smith

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Oakville, CA

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Patents Grantslast 30 patents

Information Patent Grant
Normally open reverse flow flapper valve
- Patent number 7,114,519
- Issue date Oct 3, 2006
- Pratt & Whitney Canada Corp.
- Paul Archibald Aitchison
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Normally open reverse flow flapper valve
- Patent number 6,851,255
- Issue date Feb 8, 2005
- Pratt & Whitney Canada Corp.
- Paul Archibald Aitchison
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Normally open reverse flow flapper valve
- Publication number 20050116114
- Publication date Jun 2, 2005
- Pratt & Whitney Canada Corp.
- Paul Archibald Aitchison
- F24 - HEATING RANGES VENTILATING
Information Patent Application
Normally open reverse flow flapper valve
- Publication number 20040118105
- Publication date Jun 24, 2004
- Pratt & Whitney Canada Corp.
- Paul Archibald Aitchison
- F24 - HEATING RANGES VENTILATING