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Stevens; David W.
Stevensville, MD
No. of patents:

Patent Number Title Of Patent Date Issued
5752654 Method and apparatus for providing supplemental heating May 19, 1998
A heating system having a primary heat source such as a heat pump, and a supplemental heat source, such as a resistive heater, that is used to complement the heat generated by the primary heat source. Heat is generated by the entire supplemental heat source when the difference betwee

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