Granted Patent
Utility
US 4,373,577 · App. 06/269,432
Heat exchanger assembly
Inventor:
Russell G. McMillen
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Jul 21, 1980
Inventor
Russell G. McMillen
Assignee (at issue)
International Harvester 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.