Patent Assignment
Reel/Frame 004975/0019
Assignment of Assignors Interest.
Recorded: 1988-11-21
Pages: 1
Assignor
VAN BILDERBEEK, BERNARD H.
Executed: 1988-11-17
Covered Property
(1)
Surface Wellhead
Patent:
4,938,289 →
Application:
07/274,192 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Effective on 12/01/1991
Dec 28, 1992
From: PLEXUS OCEAN SYSTEMS, LTD.
To: INGRAM CACTUS LIMITED
Reel/Frame 006384/0440 →
Assignment of Assignor's Interest
Jul 17, 1995
From: INGRAM CACTUS LIMITED
To: INGRAM CACTUS COMPANY
Reel/Frame 007553/0418 →
Assignment of Assignor's Interest
Aug 21, 1996
From: INGRAM CACTUS COMPANY
To: COOPER CAMERON CORPORATION
Reel/Frame 008113/0832 →