Patent Assignment
Reel/Frame 003860/0652
Assignment of Assignors Interest.
Recorded: 1981-06-15
Pages: 2
Assignee
GEO VANN, INC., A NEW MEXICO CORP.
P.O. BOX 4449, HOUSTON, TEXAS, 77210
Covered Property
(1)
Method for Controlling Subsurface Blowout
Patent:
4,436,154 →
Application:
06/236,867 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
May 16, 1986
From: PEABODY INTERNATIONAL CORPORATION
To: GEO INTERNATIONAL CORPORATION
Reel/Frame 004555/0052 →
Change of Name
Aug 28, 1986
From: GEO VANN, INC.
To: VANN SYSTEMS INC.
Reel/Frame 004606/0291 →
Merger
Aug 28, 1986
From: VANN SYSTEMS, INC.
To: HALLIBURTON COMPANY
Reel/Frame 004606/0300 →