Granted Patent
Utility
US 6,558,423 · App. 09/565,392
Interbody spinal fusion implants with multi-lock for locking opposed screws
Inventor:
Gary K. Michelson
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: May 5, 2000
Inventor
Gary K. Michelson
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.