Granted Patent
Utility
US 4,317,872 · App. 06/143,967
Lead acid battery with gel electrolyte
Inventor:
Brajendra P. Varma
Patented Case
View Patent ↗
Granted: Mar 2, 1982
Filed: Apr 25, 1980
Inventor
Brajendra P. Varma
Assignee (at issue)
Gould 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.