Granted Patent
Utility
US 4,295,943 · App. 06/141,199
Process for the electrolytic production of manganese dioxide
Inventors:
Nenad R. Tomov, Geoffrey M. Roberts
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Apr 17, 1980
Inventors
Nenad R. Tomov
Geoffrey M. Roberts
Assignee (at issue)
Diamond Shamrock Technologies S.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.