Granted Patent
Utility
US 6,662,876 · App. 09/818,119
Method and apparatus for downhole tubular expansion
Inventor:
Eric Lauritzen
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Mar 27, 2001
Inventor
Eric Lauritzen
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.