Granted Patent
Utility
US 5,571,191 · App. 08/405,199
Artificial facet joint
Inventor:
William R. Fitz
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Mar 16, 1995
Inventor
William R. Fitz
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.