Granted Patent
Utility
US 4,459,189 · App. 06/467,088
Electrode coated with lead or a lead alloy and method of use
Inventors:
Christopher J. Vance, Thinh Nguyen, Jean-Marie Fresnel, Henri B. Beer, Siegfried Ernst
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Feb 16, 1983
Inventors
Christopher J. Vance
Thinh Nguyen
Jean-Marie Fresnel
Henri B. Beer
Siegfried Ernst
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.