Granted Patent
Utility
US 5,954,728 · App. 09/050,602
Filling apparatus for bone cement
Inventors:
Mathias Heller, Hans-Georg Willert
Patented Case
View Patent ↗
Granted: Sep 21, 1999
Filed: Mar 30, 1998
Inventors
Mathias Heller
Hans-Georg Willert
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.