Granted Patent
Utility
US 5,298,350 · App. 07/852,803
Calcium-tin-silver lead-based alloys, and battery grids and lead-acid batteries made using such alloys
Inventor:
Purushothama Rao
Patented Case
View Patent ↗
Granted: Mar 29, 1994
Filed: Mar 17, 1992
Inventor
Purushothama Rao
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.