Granted Patent
Utility
US 6,598,686 · App. 09/769,098
Method and system for enhanced access to a subterranean zone
Inventor:
Joseph A. Zupanick
Patented Case
View Patent ↗
Granted: Jul 29, 2003
Filed: Jan 24, 2001
Inventor
Joseph A. Zupanick
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.