Granted Patent
Utility
US 4,770,660 · App. 07/004,524
Femoral prosthesis with selectively removable collar
Inventor:
Robert G. Averill
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Jan 20, 1987
Inventor
Robert G. Averill
Assignee (at issue)
Osteonics Corp.
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.