Granted Patent
Utility
US 4,353,135 · App. 06/148,291
Patellar flange and femoral knee-joint prosthesis
Inventors:
Mark R. Forte, David A. Sonstegard
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: May 9, 1980
Inventors
Mark R. Forte
David A. Sonstegard
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.