Granted Patent
Utility
US 4,248,944 · App. 06/106,025
Seals for electrochemical cells
Inventor:
Nicholas Joseph Smilanich
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Dec 21, 1979
Inventor
Nicholas Joseph Smilanich
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.