Granted Patent
Utility
US 6,423,451 · App. 09/072,401
Lead-acid cell and positive plate and alloy therefor
Inventor:
Steven R. Larsen
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: May 4, 1998
Inventor
Steven R. Larsen
Assignee (at issue)
GNB 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.