Granted Patent
Utility
US 4,420,673 · App. 06/313,139
Electrodes for use in the extrusion-fusion welding of lead parts through an aperture in a battery case and method of extruding, fusing and forging lead connections in battery cases
Inventor:
William J. Eberle
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Oct 20, 1981
Inventor
William J. Eberle
Assignee (at issue)
General Battery 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.