Granted Patent
Utility
US 6,668,949 · App. 09/913,626
Underreamer and method of use
Inventor:
Allen Kent Rives
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Aug 17, 2001
Inventor
Allen Kent Rives
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.