Granted Patent
Utility
US 5,012,862 · App. 07/581,356
Hydrophilic fins for a heat exchanger
Inventors:
Kenneth W. Espeut, Leon Barry
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Sep 12, 1990
Inventors
Kenneth W. Espeut
Leon Barry
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.