Granted Patent
Utility
US 6,755,870 · App. 09/622,754
Leg prosthesis with an artificial knee joint and method for controlling a leg prosthesis
Inventors:
Lutz Biedermann, Wilfried Matthis, Christian Schulz
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Aug 21, 2000
Inventors
Lutz Biedermann
Wilfried Matthis
Christian Schulz
Assignee (at issue)
Biedermann Motech GmbH
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.