Ronald CHAPPELL

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Stittsville, CA

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Patents Grantslast 30 patents

Information Patent Grant
Counterweighted backdraft damper blade with improved airflow profile
- Patent number 10,514,181
- Issue date Dec 24, 2019
- T.A. Morrison & Co. Inc.
- Ronald Chappell
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Damper with integrated blade stop
- Patent number 10,222,089
- Issue date Mar 5, 2019
- T.A. Morrison & Co. Inc.
- Ronald Chappell
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
DAMPER WITH INTEGRATED BLADE STOP
- Publication number 20190145653
- Publication date May 16, 2019
- T.A. MORRISON & CO. INC.
- Ronald Chappell
- F24 - HEATING RANGES VENTILATING
Information Patent Application
COUNTERWEIGHTED BACKDRAFT DAMPER BLADE WITH IMPROVED AIRFLOW PROFILE
- Publication number 20160265806
- Publication date Sep 15, 2016
- T.A. MORRISON & CO. INC.
- Ronald CHAPPELL
- F24 - HEATING RANGES VENTILATING
Information Patent Application
DAMPER WITH INTEGRATED BLADE STOP
- Publication number 20160116184
- Publication date Apr 28, 2016
- T.A. MORRISON & COMPANY, INC.
- Ronald CHAPPELL
- F24 - HEATING RANGES VENTILATING