Granted Patent
Utility
US 4,619,752 · App. 06/703,548
Electrode for electrolytic extraction of metals or metal oxides
Inventors:
Konrad Koziol, Erich Wenk
Patented Case
View Patent ↗
Granted: Oct 28, 1986
Filed: Feb 20, 1985
Inventors
Konrad Koziol
Erich Wenk
Assignee (at issue)
Conradty GmbH & Co. Metalleletroden KG
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.