Patent Assignment
Reel/Frame 024316/0186
Assignment of Assignor's Interest
Recorded: 2010-04-30
Pages: 3
Assignor
WEI, ZHOUHONG
Executed: 2010-04-27
Assignee
ION GEOPHYSICAL CORPORATION
2105 CITYWEST BLVD., STE 400, HOUSTON, TEXAS, 77042
Covered Property
(1)
Seismic Vibrator Controlled by Directly Detecting Base Plate Motion
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.