Granted Patent
Utility
US 6,727,013 · App. 09/948,897
Fuel cell energy management system for cold environments
Inventors:
William Wheat, Mark Meltser, David A. Masten
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Sep 7, 2001
Inventors
William Wheat
Mark Meltser
David A. Masten
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.