Granted Patent
Utility
US 4,287,276 · App. 06/046,990
Alkaline battery with separator of high surface area
Inventors:
Joseph T. Lundquist, Christian B. Lundsager
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Jun 8, 1979
Inventors
Joseph T. Lundquist
Christian B. Lundsager
Assignee (at issue)
W. R. Grace & Co.
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.