Granted Patent
Utility
US 5,593,409 · App. 08/390,131
Interbody spinal fusion implants
Inventor:
Gary K. Michelson
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Feb 17, 1995
Inventor
Gary K. Michelson
Assignee (at issue)
Sofamor Danek Holdings, Inc.
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.