Granted Patent
Utility
US 6,371,990 · App. 09/690,536
Annulus fibrosis augmentation methods and apparatus
Inventor:
Bret A. Ferree
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Oct 16, 2000
Inventor
Bret A. Ferree
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.