Granted Patent
Utility
US 6,732,821 · App. 10/155,242
Profiled element for rotary drilling equipment and applications to components of a string of drill pipes
Inventor:
Jean Boulet
Patented Case
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Granted: May 11, 2004
Filed: May 28, 2002
Inventor
Jean Boulet
Assignee (at issue)
S.M.F. International
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.