Granted Patent
Utility
US 4,424,620 · App. 06/288,597
Method of machining a knuckle casting
Inventor:
Frank W. Oshinsky
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Jul 30, 1981
Inventor
Frank W. Oshinsky
Assignee (at issue)
McConway & Torley, LLC
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.