Granted Patent
Utility
US 4,359,877 · App. 06/262,250
Heat pump coil circuit
Inventor:
Gerard G. Coyne
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: May 11, 1981
Inventor
Gerard G. Coyne
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.