Joseph C. Pendergrass

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Gainesville, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Heat pump system with selective space cooling
- Patent number 5,628,200
- Issue date May 13, 1997
- Wallace Heating & Air Conditioning, Inc.
- Joseph C. Pendergrass
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Solar assisted heat pump heating system
- Patent number 4,438,881
- Issue date Mar 27, 1984
- Joseph C. Pendergrass
- F24 - HEATING RANGES VENTILATING