Granted Patent
Utility
US 4,629,370 · App. 06/602,196
Sprocket cutter and method of assembling
Inventors:
Douglas E. Torgent, Robert N. Mitchell
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Apr 19, 1984
Inventors
Douglas E. Torgent
Robert N. Mitchell
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.