Granted Patent
Utility
US 5,156,932 · App. 07/694,907
Simple optimized lead-acid battery
Inventors:
Thomas J. Dougherty, James S. Symanski
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: May 2, 1991
Inventors
Thomas J. Dougherty
James S. Symanski
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.