Granted Patent
Utility
US 4,850,649 · App. 07/246,891
Rotatable cutting bit
Inventors:
Wayne H. Beach, Robert H. Montgomery, Jr., Lawrence R. Burns
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Sep 16, 1988
Inventors
Wayne H. Beach
Robert H. Montgomery, Jr.
Lawrence R. Burns
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.