Granted Patent
Utility
US 4,853,305 · App. 07/085,330
Cathodic electrode
Inventors:
Menahem Anderman, Steven L. Johnson
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Aug 14, 1987
Inventors
Menahem Anderman
Steven L. Johnson
Assignee (at issue)
W.R. Grace & Co. Conn.
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.