Granted Patent
Utility
US 6,743,255 · App. 10/146,291
Spinal fusion cage with lordosis correction
Inventor:
Bret A. Ferree
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: May 15, 2002
Inventor
Bret A. Ferree
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.