Granted Patent
Utility
US 4,421,832 · App. 06/295,479
Electrochemical cell
Inventor:
Toshio Uba
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Aug 24, 1981
Inventor
Toshio Uba
Assignee (at issue)
The Gates Rubber Company
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.