Granted Patent
Utility
US 6,604,580 · App. 10/123,561
Method and system for accessing subterranean zones from a limited surface area
Inventors:
Joseph A. Zupanick, Monty H. Rial
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Apr 15, 2002
Inventors
Joseph A. Zupanick
Monty H. Rial
Assignee (at issue)
CDX Gas, LLC
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.