Granted Patent
Utility
US 5,259,709 · App. 07/690,244
Grooving or threading tool
Inventor:
Carl E. Hunt
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Apr 24, 1991
Inventor
Carl E. Hunt
Assignee (at issue)
VALENITE 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.