Patent Assignment
Reel/Frame 013457/0351
Assignment of Assignor's Interest
Recorded: 2002-10-30
Pages: 3
Assignee
BJ SERVICES COMPANY
5500 NORTHWEST CENTRAL DRIVE, HOUSTON, TEXAS, 77092
Covered Property
(1)
Cement Expansion/Contraction Test Apparatus
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.