Granted Patent
Utility
US 4,328,680 · App. 06/196,411
Heat pump defrost control apparatus
Inventors:
Custis L. Stamp, Jr., Rollie R. Herzog
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Oct 14, 1980
Inventors
Custis L. Stamp, Jr.
Rollie R. Herzog
Assignee (at issue)
General Electric 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.