Granted Patent
Utility
US 5,236,289 · App. 07/667,180
Shielded universal joint, jointed tool and guided surgical drill
Inventor:
Paul E. Salyer
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Mar 11, 1991
Inventor
Paul E. Salyer
Assignee (at issue)
Othy, 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.