Granted Patent
Utility
US 6,024,143 · App. 09/273,936
Cutting tooth assembly
Inventor:
Cary D. Ritchey
Patented Case
View Patent ↗
Granted: Feb 15, 2000
Filed: Mar 22, 1999
Inventor
Cary D. Ritchey
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.