Granted Patent
Utility
US 4,979,853 · App. 07/470,459
Cutting tool holder for high speed spindle machining system
Inventor:
Nathaniel L. Field
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Jan 26, 1990
Inventor
Nathaniel L. Field
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.