Granted Patent
Utility
US 6,557,641 · App. 09/853,007
Modular wellbore tubular handling system and method
Inventors:
David L. Sipos, Donald E. Mosing
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: May 10, 2001
Inventors
David L. Sipos
Donald E. Mosing
Assignee (at issue)
Frank's Casing Crew and Rental Tools, Inc.
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.