Granted Patent
Utility
US 4,666,797 · App. 06/597,198
Wear resistant facings for couplings
Inventors:
Harold C. Newman, William M. Stoll
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Apr 5, 1984
Inventors
Harold C. Newman
William M. Stoll
Assignee (at issue)
KENNAMETAL 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.