Granted Patent
Utility
US 4,604,004 · App. 06/805,246
Cutting tool assembly
Inventor:
William D. Armbrust
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Dec 3, 1985
Inventor
William D. Armbrust
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.