Granted Patent
Utility
US 6,368,740 · App. 09/465,104
Electrochemical cell frame having integral protector portion
Inventor:
Mark E. Dristy
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Dec 16, 1999
Inventor
Mark E. Dristy
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.