Granted Patent
Utility
US 6,447,547 · App. 09/643,696
Artificial spinal fusion implants
Inventor:
Gary K. Michelson
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Aug 22, 2000
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.