Patent Assignment
Reel/Frame 016068/0331
Assignment of Assignor's Interest
Recorded: 2005-04-13
Pages: 3
Assignor
DRZEWIECKI, LOPEK
Executed: 2005-04-13
Assignee
NATIONAL-OILWELL, L.P.
10000 RICHMOND AVENUE, SUITE 400, HOUSTON, TEXAS, 77042
Covered Property
(1)
Pipe Elevator with Rotating Door
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.