Granted Patent
Utility
US 4,955,911 · App. 07/341,149
Bone implant
Inventors:
Otto Frey, Rudolf Koch
Patented Case
View Patent ↗
Granted: Sep 11, 1990
Filed: Apr 20, 1989
Inventors
Otto Frey
Rudolf Koch
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.