Granted Patent
Utility
US 6,315,557 · App. 09/533,346
Rotary dental instrument and methods of use
Inventor:
Keith Messick
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Mar 23, 2000
Inventor
Keith Messick
Assignee (at issue)
Ormco Corporation
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.