Granted Patent
Utility
US 6,161,990 · App. 09/190,075
Cutting insert with improved flank surface roughness and method of making the same
Inventors:
Edward J. Oles, Lee Thomas
Patented Case
View Patent ↗
Granted: Dec 19, 2000
Filed: Nov 12, 1998
Inventors
Edward J. Oles
Lee Thomas
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.