Patent Assignment
Reel/Frame 015938/0871
Assignment of Assignor's Interest
Recorded: 2005-03-21
Pages: 3
Assignor
WANG, CHENGBAO
Executed: 2005-03-02
Assignee
WOOD GROUP ESP, INC.
5500 S.E. 59TH STREET, OKLAHOMA CITY, OKLAHOMA, 73135
Covered Property
(1)
Labyrinth Seal for Pumping System
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.