Granted Patent
Utility
US 4,258,957 · App. 05/970,604
Cutting machine nose shoe
Inventor:
Ralph Mitchell
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: Dec 18, 1978
Inventor
Ralph Mitchell
Assignee (at issue)
Joy Manufacturing Company
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.