Granted Patent
Utility
US 4,919,679 · App. 07/304,782
Femoral stem surgical instrument system
Inventors:
Robert G. Averill, Alfred J. Zarnowski, Matthew Lyons
Patented Case
View Patent ↗
Granted: Apr 24, 1990
Filed: Jan 31, 1989
Inventors
Robert G. Averill
Alfred J. Zarnowski
Matthew Lyons
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.