Granted Patent
Utility
US 4,900,643 · App. 07/179,068
Lead acid bipolar battery plate and method of making the same
Inventors:
Michael David Eskra, William C. Delaney, Gerald K. Bowen
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Apr 8, 1988
Inventors
Michael David Eskra
William C. Delaney
Gerald K. Bowen
Assignee (at issue)
Globe-Union Inc.
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.