Granted Patent
Utility
US 4,745,982 · App. 06/935,735
Adjustable bent sub
Inventor:
Kenneth H. Wenzel
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Nov 28, 1986
Inventor
Kenneth H. Wenzel
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.