Granted Patent
Utility
US 5,690,393 · App. 08/641,608
Cutting tool retention system
Inventors:
Ted R. Massa, Robert H. Montgomery, Jr.
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: May 1, 1996
Inventors
Ted R. Massa
Robert H. Montgomery, Jr.
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.