Patent Assignment
Reel/Frame 015174/0232
Assignment of Assignor's Interest
Recorded: 2003-10-27
Pages: 2
Assignor
VAN DUK, ROBERT ALBERTUS
Executed: 2002-04-25
Assignee
SHELL OIL COMPANY
910 LOUISIANA, P.O. BOX 2463, HOUSTON, TEXAS, 77252-2463
Covered Property
(1)
Drilling System with Expandable Sleeve
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.