Granted Patent
Utility
US 4,581,901 · App. 06/628,156
Control system for a heat pump system
Inventors:
George W. Adams, Jimmy L. Sheeks
Patented Case
View Patent ↗
Granted: Apr 15, 1986
Filed: Jul 5, 1984
Inventors
George W. Adams
Jimmy L. Sheeks
Assignee (at issue)
Emhart Industries, Inc.
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.