Granted Patent
Utility
US 6,440,139 · App. 09/734,303
Milling instrumentation and method for preparing a space between adjacent vertebral bodies
Inventor:
Gary K. Michelson
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Dec 12, 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.