Granted Patent
Utility
US 4,978,355 · App. 06/816,340
Plastic bone implant having a reinforced contact surface
Inventors:
Otto Frey, Manfred Semlitsch, Heinz Weber
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Jan 6, 1986
Inventors
Otto Frey
Manfred Semlitsch
Heinz Weber
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.