Patent Assignment
Reel/Frame 023130/0339
Assignment of Assignor's Interest
Recorded: 2009-08-21
Pages: 2
Assignor
U.S. STEEL MINING COMPANY, LLC
Executed: 2001-07-17
Assignee
CDX GAS, LLC
1001 MCKINNEY STREET, SUITE 1600, HOUSTON, TEXAS, 77002
Covered Property
(1)
Method and System for Accessing Subterranean Deposits from the Surface and Tools Therefor
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Aug 21, 2009
From: ZUPANICK, JOSEPH A.
To: CDX GAS, LLC
Reel/Frame 023130/0141 →
Change of Name
Nov 2, 2009
From: CDX GAS, LLC
To: VITRUVIAN EXPLORATION, LLC
Reel/Frame 023456/0198 →
Assignment of Assignor's Interest
Feb 12, 2014
From: VITRUVIAN EXPLORATION, LLC
To: EFFECTIVE EXPLORATION LLC
Reel/Frame 032263/0664 →