Granted Patent
Utility
US 5,339,873 · App. 08/074,363
Cored battery plates for lead/acid batteries
Inventor:
Robert Feldstein
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Jun 10, 1993
Inventor
Robert Feldstein
Assignee (at issue)
Derafe, Ltd.
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.