Granted Patent
Utility
US 5,015,247 · App. 07/205,935
Threaded spinal implant
Inventor:
Gary K. Michelson
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Jun 13, 1988
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.