Granted Patent
Utility
US 6,000,940 · App. 09/069,342
Surgical bur shank and locking collet mechanism
Inventors:
Rick A. Buss, Shaher Ahmad, Michael Wei
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Apr 29, 1998
Inventors
Rick A. Buss
Shaher Ahmad
Michael Wei
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.