Granted Patent
Utility
US 5,007,153 · App. 07/374,915
Method for tightening threaded connectors
Inventor:
John K. Junkers
Patented Case
View Patent ↗
Granted: Apr 16, 1991
Filed: Jun 29, 1989
Inventor
John K. Junkers
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.