Patent Assignment
Reel/Frame 020536/0260
Assignment of Assignor's Interest
Recorded: 2008-02-20
Pages: 3
Assignor
ZUPANICK, JOSEPH A.
Executed: 2004-01-08
Assignee
CDX GAS, LLC
5485 BELTLINE ROAD, SUITE 190, DALLAS, TEXAS, 75240-7656
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
Feb 20, 2008
From: U.S. STEEL MINING COMPANY, LLC
To: CDX GAS, LLC
Reel/Frame 020536/0231 →
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 →