Granted Patent
Utility
US 4,352,698 · App. 06/212,340
Method of improving the wear resistance of metals
Inventors:
Nicholas E. W. Hartley, Alan Wilcockson, David Michael Sutherland
Patented Case
View Patent ↗
Granted: Oct 5, 1982
Filed: Dec 2, 1980
Inventors
Nicholas E. W. Hartley
Alan Wilcockson
David Michael Sutherland
Assignee (at issue)
United Kingdom Atomic Energy Authority
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.