Granted Patent
Utility
US 4,242,927 · App. 06/032,632
Method of making a cutting tool
Inventor:
Ronald R. Oaks
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Apr 23, 1979
Inventor
Ronald R. Oaks
Assignee (at issue)
Niagara Cutter
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.