Granted Patent
Utility
US 4,606,891 · App. 06/625,771
Electrode holder useful in a corrosion testing device
Inventors:
Robert J. Murphy, Dale E. Jamison
Patented Case
View Patent ↗
Granted: Aug 19, 1986
Filed: Jun 28, 1984
Inventors
Robert J. Murphy
Dale E. Jamison
Assignee (at issue)
NL Industries, Inc.
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.