Keith S. Betley

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Bear, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Exterior ductwork system
- Patent number 7,044,171
- Issue date May 16, 2006
- James W. Betley
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Exterior ductwork system
- Publication number 20050000585
- Publication date Jan 6, 2005
- James W. Betley
- F24 - HEATING RANGES VENTILATING