Patent Assignment
Reel/Frame 004084/0923
Assignment of Assignors Interest.
Recorded: 1982-08-19
Pages: 2
Assignor
BRIEGER, EMMET F.
Executed: 1982-08-04
Assignee
GEO VANN, INC., A CORP OF NM.
HOUSTON, TEXAS
Covered Property
(1)
Differential Vent and Bar Actuated Circulating Valve and Method
Patent:
4,529,038 →
Application:
06/409,455 →
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 →