Granted Patent
Utility
US 4,366,677 · App. 06/275,966
Heat pump water heater with remote storage tank and timed temperature sensing
Inventor:
Robert B. Uselton
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Jun 22, 1981
Inventor
Robert B. Uselton
Assignee (at issue)
Atlantic Richfield Company
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.