Granted Patent
Utility
US 6,254,640 · App. 09/322,241
Shaft prosthesis and set
Inventors:
Alessandro De Cesaris, Manfred Menzi, Wolfhart Puhl
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: May 28, 1999
Inventors
Alessandro De Cesaris
Manfred Menzi
Wolfhart Puhl
Assignee (at issue)
Sulzer Orthopaedie AG
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.