Granted Patent
Utility
US 4,828,566 · App. 07/011,064
Hip joint implant
Inventor:
Peter Griss
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Feb 4, 1987
Inventor
Peter Griss
Assignee (at issue)
Sulzer Brothers Limited
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.