Granted Patent
Utility
US 6,695,845 · App. 09/977,663
Method and apparatus utilizing interference fit screw shanks for nonmetallic spinal stabilization
Inventors:
Robert Dixon, Donald J. Hackman
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Oct 15, 2001
Inventors
Robert Dixon
Donald J. Hackman
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.