Granted Patent
Utility
US 6,821,660 · App. 09/993,401
Gas humidification device for operation, testing, and evaluation of fuel cells
Inventors:
Craig C. Andrews, Mark J. Flusche, Donald P. Lyons
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Nov 14, 2001
Inventors
Craig C. Andrews
Mark J. Flusche
Donald P. Lyons
Assignee (at issue)
Fideris, 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.