Granted Patent
Utility
US 4,642,173 · App. 06/735,627
Cell having coated valve metal electrode for electrolytic galvanizing
Inventors:
Konrad Koziol, Erich Wenk
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: May 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.