Granted Patent
Utility
US 4,261,062 · App. 06/022,689
Natural shoulder joint prosthesis
Inventors:
Harlan C. Amstutz, Ian C. Clarke
Patented Case
View Patent ↗
Granted: Apr 14, 1981
Filed: Mar 22, 1979
Inventors
Harlan C. Amstutz
Ian C. Clarke
Assignee (at issue)
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
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.