Granted Patent
Utility
US 6,502,041 · App. 09/674,009
Method for controlling taper pipe thread and corresponding control devices
Inventors:
Thierry Noel, Gilles Assens
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Jan 24, 2001
Inventors
Thierry Noel
Gilles Assens
Assignee (at issue)
VALLOUREC MANNESMANN OIL & GAS FRANCE
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.