Patent Assignment
Reel/Frame 028357/0254
Assignment of Assignor's Interest
Recorded: 2012-06-12
Pages: 7
Assignors
FRISBY, RAYMOND A.
Executed: 2012-04-03
PHILLIPS, JEFFREY S.
Executed: 2012-04-04
NELSON, ROY N.
Executed: 2012-06-04
LAUDERDALE, DONALD
Executed: 2012-04-05
Assignee
BAKER HUGHES INCORPORATED
2929 ALLEN PARKWAY, SUITE 2100, HOUSTON, TEXAS, 77019-2118
Covered Property
(1)
Barrier Valve System and Method of Closing Same by Withdrawing Upper Completion