Granted Patent
Utility
US 4,575,287 · App. 06/457,865
Milling cutter and method of assembling therefor
Inventors:
James A. Oshnock, Robert A. Erickson
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Jan 13, 1983
Inventors
James A. Oshnock
Robert A. Erickson
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.