Granted Patent
Utility
US 4,415,024 · App. 06/204,321
Heat exchanger assembly
Inventor:
Robert L. Baker
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Nov 5, 1980
Inventor
Robert L. Baker
Assignee (at issue)
Joy Manufacturing 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.