Granted Patent
Utility
US 5,865,249 · App. 08/838,901
Method and apparatus for washing a horizontal wellbore with coiled tubing
Inventors:
Larry J. Gipson, John C. Patterson
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: Apr 11, 1997
Inventors
Larry J. Gipson
John C. Patterson
Assignee (at issue)
Atlantic Richfield Company
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.