Granted Patent
Utility
US 4,608,318 · App. 06/600,600
Casting having wear resistant compacts and method of manufacture
Inventors:
Nicholas Makrides, Earle W. Stephenson
Patented Case
View Patent ↗
Granted: Aug 26, 1986
Filed: Apr 17, 1984
Inventors
Nicholas Makrides
Earle W. Stephenson
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.