Granted Patent
Utility
US 5,143,805 · App. 07/521,060
Cathodic electrode
Inventors:
Menahem Anderman, Steven L. Johnson, Michael C. Saft, David Zuckerbrod
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: May 3, 1990
Inventors
Menahem Anderman
Steven L. Johnson
Michael C. Saft
David Zuckerbrod
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.