Granted Patent
Utility
US 4,716,751 · App. 06/865,756
Non-slip thread rolling dies
Inventor:
Edmund T. Wozniak
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: May 22, 1986
Inventor
Edmund T. Wozniak
Assignee (at issue)
Colt Industries Operating Corporation
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.