Granted Patent
Utility
US 5,074,362 · App. 07/579,653
Finger nut setting tool and liner hanger assembly
Inventor:
Roger P. Allwin
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Sep 10, 1990
Inventor
Roger P. Allwin
Assignee (at issue)
Lindsey Completion Systems, Inc.
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.