Granted Patent
Utility
US 6,817,633 · App. 10/325,050
Tubular members and threaded connections for casing drilling and method
Inventors:
Leland Brill, Bluford Lowery, Edmond Miller
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Dec 20, 2002
Inventors
Leland Brill
Bluford Lowery
Edmond Miller
Assignee (at issue)
Lone Star Steel Company, L.P.
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.