Granted Patent
Utility
US 6,419,488 · App. 08/636,608
Endodontic instrument having a chisel tip
Inventors:
John T. McSpadden, Tim L. Taylor
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Apr 24, 1996
Inventors
John T. McSpadden
Tim L. Taylor
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.