Granted Patent
Utility
US 6,409,506 · App. 09/563,048
Endodontic instruments and process for producing the same
Inventor:
Lonnie M. Graybill
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: May 1, 2000
Inventor
Lonnie M. Graybill
Assignee (at issue)
Miltex Dental, Inc.
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.