Granted Patent
Utility
US 4,640,875 · App. 06/699,118
Fuel cell generator containing a gas sealing means
Inventor:
Joseph M. Makiel
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Feb 7, 1985
Inventor
Joseph M. Makiel
Assignee (at issue)
Westinghouse Electric Company LLC
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.