Granted Patent
Utility
US 4,674,802 · App. 06/524,350
Multi-insert cutter bit
Inventors:
Alex G. McKenna, Clyde G. Hutzell
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Aug 18, 1983
Inventors
Alex G. McKenna
Clyde G. Hutzell
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.