Granted Patent
Utility
US 6,666,040 · App. 10/189,296
Efficient water source heat pump with hot gas reheat
Inventors:
Peter Groenewold, Danny R. Hall
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: Jul 2, 2002
Inventors
Peter Groenewold
Danny R. Hall
Assignee (at issue)
Desert Aire Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.