Patent Assignment
Reel/Frame 016345/0442
Assignment of Assignor's Interest
Recorded: 2005-08-03
Pages: 3
Assignor
WEATHERFORD U.S., L.P.
Executed: 2005-07-28
Assignee
WEATHERFORD/LAMB, INC.
515 POST OAK BLVD. SUITE 600, HOUSTON, TEXAS, 77027
Covered Properties
(2)
Method and Apparatus for Leak Testing of Pipe
Patent:
4,879,896 →
Application:
07/086,792 →
Method and Apparatus for Leak Testing of Pipe
Patent:
4,998,435 →
Application:
07/296,859 →
Related Assignments
(3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
May 22, 1998
From: DAMCO SERVICES, INC.
To: DAILEY INTERNATIONAL INC.
Reel/Frame 009214/0455 →
Assignment of Assignor's Interest
May 23, 1998
From: DAMCO TESTERS, INC.
To: DAMCO SERVICES, INC.
Reel/Frame 009214/0444 →
Assignment of Assignor's Interest
Jul 18, 2000
From: DAILEY INTERNATIONAL, INC.
To: WEATHERFORD U.S. L.P.
Reel/Frame 010977/0150 →