Granted Patent
Utility
US 4,822,377 · App. 07/157,190
Method for sealing an electrochemical cell employing an improved reinforced cover assembly
Inventor:
Merle Wolff
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Feb 18, 1988
Inventor
Merle Wolff
Assignee (at issue)
Energy Conversion Devices, 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.