Granted Patent
Utility
US 4,886,053 · App. 07/222,146
Stay for orthopedic appliance for the knee
Inventor:
Charles O. Neal
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Jul 21, 1988
Inventor
Charles O. Neal
Assignee (at issue)
DeRoyal Industries, 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.