Granted Patent
Utility
US 6,805,984 · App. 10/230,876
Cooling fan system for a vehicle with fuel cell propulsion
Inventor:
Klaus Harth
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Aug 29, 2002
Inventor
Klaus Harth
Assignee (at issue)
General Motors 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.