Granted Patent
Utility
US 4,729,933 · App. 07/017,282
Sealed absorbed electrolyte battery with bulge compensating end cells
Inventor:
Thomas Oswald
Patented Case
View Patent ↗
Granted: Mar 8, 1988
Filed: Feb 11, 1987
Inventor
Thomas Oswald
Assignee (at issue)
GnB
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.