Granted Patent
Utility
US 4,649,091 · App. 06/576,675
Fuel cell battery with improved membrane cooling
Inventor:
James F. McElroy
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Feb 3, 1984
Inventor
James F. McElroy
Assignee (at issue)
UNITED TECHNOLOGIES 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.