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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Cooperman; Curtis L.
Address:
Kailua, HI
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4596123 Frost-resistant year-round heat pump June 24, 1986
This invention is an improved refrigerant-cycle heat pump that requires neither a defrosting means nor a backup heat source. From widely varying outside environments, it pumps heat to heat living spaces or domestic hot water. Liquid refrigerant flows from a receiver through expansion val










 
 
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