Patent Assignment
Reel/Frame 006935/0611
Assignment of Assignor's Interest
Recorded: 1994-03-30
Pages: 3
Assignor
WICKANDER, NELS
Executed: 1994-03-30
Assignee
PRIDECO, INC.
6545 N. ELDRIDGE PKWY, HOUSTON, TEXAS, 77041
Covered Property
(1)
Method and Apparatus for Measuring the Length (Miu) of the Internal Taper of an Internally Upset Drill Pipe Tube
Patent:
5,479,721 →
Application:
08/220,281 →
Related Assignments
(8)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jul 21, 1995
From: PRIDECO, INC.
To: GRANT TFW, INC.
Reel/Frame 007558/0312 →
Change of Name
Jan 8, 2001
From: GRANT TFW, INC.
To: GRANT PRIDECO, INC.
Reel/Frame 011436/0249 →
Assignment of Assignor's Interest
Jan 17, 2001
From: GRANT PRIDECO, INC.
To: GRANT PRIDECO, L.P.
Reel/Frame 011449/0400 →
Grant of Patent
Jan 3, 2003
From: GRANT PRIDECO, L.P.
To: DEUTSCHE BANK TRUST COMPANY AMERICAS
Reel/Frame 013333/0021 →
Release of Grant of Patent Security Agreement
Jun 1, 2005
From: DEUTSCHE BANK TRUST COMPANY AMERICAS
To: GRANT PRIDECO, L.P.
Reel/Frame 016079/0694 →
Security Agreement
Jun 3, 2005
From: GRANT PRIDECO, L.P.
To: WELLS FARGO BANK
Reel/Frame 016087/0629 →
Release of Patent Security Agreement
Sep 18, 2006
From: WELLS FARGO BANK
To: GRANT PRIDECO, L.P.
Reel/Frame 018268/0796 →
Release of Patent Security Agreement
Sep 18, 2006
From: WELLS FARGO BANK
To: GRANT PRIDECO, L.P.
Reel/Frame 018279/0119 →