Granted Patent
Utility
US 4,374,909 · App. 06/277,730
Seals for electrochemical cells
Inventor:
Gary R. Tucholski
Patented Case
View Patent ↗
Granted: Feb 22, 1983
Filed: Jun 26, 1981
Inventor
Gary R. Tucholski
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.