Granted Patent
Utility
US 6,644,972 · App. 09/925,988
Endodontic obturator with removable carrier and method of use thereof
Inventor:
Ralph C. Mays
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Aug 9, 2001
Inventor
Ralph C. Mays
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.