Granted Patent
Utility
US 6,588,211 · App. 09/985,181
Motor vehicle with a drive combustion engine
Inventors:
Peter Friebe, Uwe Griesmeier, Berthold Keppeler, Jurgen Ludwig
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Nov 1, 2001
Inventors
Peter Friebe
Uwe Griesmeier
Berthold Keppeler
Jurgen Ludwig
Assignee (at issue)
BALLARD POWER SYSTEMS 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.