Granted Patent
Utility
US 5,209,992 · App. 07/805,555
Water by-passing, flame retardant battery vent plug
Inventor:
Fred F. Feres
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Dec 10, 1991
Inventor
Fred F. Feres
Assignee (at issue)
Exide Corporation
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.