Granted Patent
Utility
US 6,742,957 · App. 10/017,966
Method and device for threaded closure of pipelines or vessels
Inventors:
Michael C. Smith, Billy W. White, Blake Smith
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Oct 30, 2001
Inventors
Michael C. Smith
Billy W. White
Blake Smith
Assignee (at issue)
Robbins & Myers Energy Systems 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.