Granted Patent
Utility
US 6,443,993 · App. 09/816,902
Self-adjusting prosthetic ankle apparatus
Inventor:
Wayne A. Koniuk
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Mar 23, 2001
Inventor
Wayne A. Koniuk
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.