Granted Patent
Utility
US 4,980,252 · App. 07/454,082
Grid electrode for lead-acid cell
Inventor:
Anthony G. Cannone
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Dec 21, 1989
Inventor
Anthony G. Cannone
Assignee (at issue)
AT&T Bell Laboratories
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.