IP Library › Assignment 022934/0881
Patent Assignment
Reel/Frame 022934/0881

Assignment of Assignor's Interest

Recorded: 2009-07-01 Pages: 2
Assignor
TARRALDRUD, PALL
Executed: 2008-12-22
Assignee
NATIONAL OILWELL NORWAY AS
SERVICEBOKS 401, KRISTIANSAND S, NORWAY
Covered Property (1)
Drawworks Device on a Drill Floor
Patent: 8,534,387 →
Application: 12/308,591 →
Publication: US 2010/0294568
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Jan 9, 2015
From: NATIONAL OILWELL NORWAY AS
To: NATIONAL OILWELL VARCO NORWAY AS
Reel/Frame 034746/0374 →
Assignment of Assignor's Interest Jun 2, 2023
From: NATIONAL OILWELL VARCO NORWAY AS
To: NOV INTERNATIONAL HOLDINGS C.V.
Reel/Frame 064367/0415 →
Assignment of Assignor's Interest Jun 7, 2023
From: NOV INTERNATIONAL HOLDINGS C.V.
To: GRANT PRIDECO, INC.
Reel/Frame 063888/0818 →