Patent Assignment
Reel/Frame 017942/0580
Assignment of Assignor's Interest
Recorded: 2005-11-18
Pages: 2
Assignor
ZIJSLING, DJURRE HANS
Executed: 2005-08-30
Assignee
SHELL OIL COMPANY
P.O. BOX 2463, 910 LOUISIANA, HOUSTON, TEXAS, 77252-2463
Covered Property
(1)
Drill Bit and System for Drilling a Borehole
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.