Patent Assignment
Reel/Frame 004147/0351
Assignment of Assignors Interest.
Recorded: 1983-06-28
Pages: 2
Assignee
DAMCO TESTERS, INC., A CORP. OF LA
P.O. BOX 1267, HOUMA, LOUISIANA, 70361
Covered Property
(1)
Apparatus for Leak Testing of Pipe
Patent:
4,517,828 →
Application:
06/508,464 →
Related Assignments
(3)
Other recorded transfers of the patent 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 →