Granted Patent
Utility
US 5,989,739 · App. 08/801,809
Method for operating a fuel cell system
Inventors:
Detlef Zur Megede, Martin Schüssler
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Feb 14, 1997
Inventors
Detlef Zur Megede
Martin Schüssler
Assignee (at issue)
Daimlerchrysler AG
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.