Granted Patent
Utility
US 4,678,472 · App. 06/553,520
Ball and socket bearing for artificial joint
Inventor:
Douglas G. Noiles
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Nov 21, 1983
Inventor
Douglas G. Noiles
Assignee (at issue)
Joint Medical Products Corporation
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.