Granted Patent
Utility
US 6,712,142 · App. 10/212,304
Apparatus and methods for expanding tubulars in a wellbore
Inventors:
Neil A. A. Simpson, David M. Haugen
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Aug 5, 2002
Inventors
Neil A. A. Simpson
David M. Haugen
Assignee (at issue)
Weatherford/Lamb, 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.