Granted Patent
Utility
US 4,452,216 · App. 06/424,008
Even temperature intercooler
Inventors:
Paul J. Patchen, Colin Chen
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Sep 27, 1982
Inventors
Paul J. Patchen
Colin Chen
Assignee (at issue)
Allis-Chalmers Corporation
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.