Granted Patent
Utility
US 5,695,497 · App. 08/412,307
Screw made of biodegradable material for bone surgery purposes, and screwdriver suitable therefor
Inventor:
Andreas C. Stahelin
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Mar 29, 1995
Inventor
Andreas C. Stahelin
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.