Granted Patent
Utility
US 5,290,641 · App. 07/886,607
Method of controlling operation of fuel cell power supply
Inventor:
Kouichi Harashima
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: May 21, 1992
Inventor
Kouichi Harashima
Assignee (at issue)
FUJI ELECTRIC CO., LTD.
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.