Granted Patent
Utility
US 4,741,393 · App. 07/077,251
Heat exchanger with coated fins
Inventor:
Howard I. J. Collier
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Jul 24, 1987
Inventor
Howard I. J. Collier
Assignee (at issue)
JW Aluminum 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.