Granted Patent
Utility
US 4,444,632 · App. 06/382,690
Electrolysis cell
Inventor:
Oronzio deNora
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: May 27, 1982
Inventor
Oronzio deNora
Assignee (at issue)
Oronzio deNora Impianti Elettrochimici S.p.A.
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.