Granted Patent
Utility
US 4,542,943 · App. 06/719,029
Earthworking tool for protecting from abnormally high cutting loads
Inventor:
Robert H. Montgomery, Jr.
Patented Case
View Patent ↗
Granted: Sep 24, 1985
Filed: Apr 3, 1985
Inventor
Robert H. Montgomery, Jr.
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.