Walter W. Bowman

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McKinney, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Variable speed motor control circuit
- Patent number 7,248,015
- Issue date Jul 24, 2007
- Hoffman Controls Corp.
- Howard P. Byrnes, Jr.
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable speed fan motor control for forced air heating/cooling system
- Patent number 7,191,826
- Issue date Mar 20, 2007
- Hoffman Controls Corp.
- Howard P. Byrnes
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Variable speed fan motor control for forced air heating/cooling system
- Patent number 6,695,046
- Issue date Feb 24, 2004
- Hoffman Controls Corp.
- Howard P. Byrnes
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
Variable speed motor control circuit
- Publication number 20060097687
- Publication date May 11, 2006
- Howard P. Byrnes
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Variable speed fan motor control for forced air heating/cooling system
- Publication number 20040173346
- Publication date Sep 9, 2004
- HOFFMAN CONTROLS CORP.
- Howard P. Byrnes
- F24 - HEATING RANGES VENTILATING