Granted Patent
Utility
US 6,833,211 · App. 10/689,238
Fuel cell stack having a reduced volume
Inventor:
Deliang Yang
Patented Case
View Patent ↗
Granted: Dec 21, 2004
Filed: Oct 20, 2003
Inventor
Deliang Yang
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.