Granted Patent
Utility
US 4,490,826 · App. 06/379,708
Method of resetting anode spike
Inventors:
Yutaka Kawamata, Akira Matsuo
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: May 19, 1982
Inventors
Yutaka Kawamata
Akira Matsuo
Assignee (at issue)
Mitsubishi Light Metal Industries Limited
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.