Granted Patent
Utility
US 6,682,845 · App. 09/965,680
Apparatus for maintaining compression of the active area in an electrochemical cell
Inventors:
Jason Shiepe, Greg Hanlon
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Sep 27, 2001
Inventors
Jason Shiepe
Greg Hanlon
Assignee (at issue)
PROTON ENERGY SYSTEMS, 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.