Granted Patent
Utility
US 4,577,682 · App. 06/645,999
Heat exchanger
Inventors:
Jack S. Yampolsky, David P. E. Carosella, Jr.
Patented Case
View Patent ↗
Granted: Mar 25, 1986
Filed: Aug 30, 1984
Inventors
Jack S. Yampolsky
David P. E. Carosella, Jr.
Assignee (at issue)
GA Technologies, 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.