Granted Patent
Utility
US 4,723,419 · App. 06/894,178
Outdoor heat exchanger section
Inventors:
Alan F. Kessler, William A. Smiley, III, Michael Wendt
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Aug 7, 1986
Inventors
Alan F. Kessler
William A. Smiley, III
Michael Wendt
Assignee (at issue)
American Standard Inc.
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.