Granted Patent
Utility
US 4,664,989 · App. 06/783,533
Liquid cathode cell system employing a coiled electrode assembly
Inventor:
Daniel Johnson
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Oct 3, 1985
Inventor
Daniel Johnson
Assignee (at issue)
Union Carbide Corporation
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.