Granted Patent
Utility
US 5,352,549 · App. 07/923,263
Lead oxide composition for use in lead-acid batteries
Inventors:
Purushothama Rao, Frederick L. Marsh
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Aug 19, 1992
Inventors
Purushothama Rao
Frederick L. Marsh
Assignee (at issue)
GNB Battery Technologies, 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.