Granted Patent
Utility
US 4,608,279 · App. 06/686,750
Galvanic cells having ion exchange resin in their cathode mix
Inventor:
Brooke Schumm, Jr.
Patented Case
View Patent ↗
Granted: Aug 26, 1986
Filed: Dec 27, 1984
Inventor
Brooke Schumm, Jr.
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.