Granted Patent
Utility
US 4,871,369 · App. 07/124,134
Long stem hip implant
Inventor:
Charles Muller
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Nov 23, 1987
Inventor
Charles Muller
Assignee (at issue)
Pfizer Hospital Products Group, 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.