Granted Patent
Utility
US 4,869,313 · App. 07/219,119
Low pressure drop condenser/evaporator pump heat exchanger
Inventor:
Joseph E. Fredley
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Jul 15, 1988
Inventor
Joseph E. Fredley
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.