Granted Patent
Utility
US 4,286,905 · App. 06/145,164
Method of machining steel, malleable or nodular cast iron
Inventor:
Shyam K. Samanta
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Apr 30, 1980
Inventor
Shyam K. Samanta
Assignee (at issue)
Ford Motor 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.