Granted Patent
Utility
US 6,773,840 · App. 10/057,233
Configuration enabling rapid fuel cell power from sub-freezing initial condition
Inventors:
Harold T. Couch, Frederick Sribnik
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Jan 25, 2002
Inventors
Harold T. Couch
Frederick Sribnik
Assignee (at issue)
UTC Fuel Cells, 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.