Patent Assignment
Reel/Frame 004849/0431
Assignment of Assignors Interest.
Recorded: 1988-03-23
Pages: 2
Assignor
BESON, JOHN
Executed: 1987-12-11
Assignee
FOSTER OILFIELD EQUIPMENT CO.
6445 BURLINGTON NORTH, A DE CORP., HOUSTON, TEXAS, 77240-0787
Covered Properties
(3)
Gate Valve Having a Secondary Seal
Patent:
4,377,273 →
Application:
06/235,120 →
Gate Valve Having a Secondary Seal
Patent:
4,566,671 →
Application:
06/551,589 →
Gate Valve Having an Improved Secondary Seal
Application:
06/814,221 →
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
License
Jul 29, 1983
From: BESON, JOHN
To: FORCE TOOL COMPANY 6311 ANTOINE, HOUSTON, TX
Reel/Frame 004152/0886 →
License See Record for Details.
Mar 28, 1988
From: TRAVIS BANK & TRUST
To: FOSTER OILFIELD EQUIPMENT CO., A DE CORP.
Reel/Frame 004846/0627 →
Change of Name
Sep 26, 1994
From: FOSTER OILFIELD EQUIPMENT CO.
To: FOSTER VALVE CORPORATION
Reel/Frame 007150/0496 →
Assignment of Assignor's Interest
Aug 9, 1995
From: FOSTER VALVE CORPORATION
To: INGRAM CACTUS CO.
Reel/Frame 007570/0479 →
Assignment of Assignor's Interest
Aug 21, 1996
From: INGRAM CACTUS COMPANY
To: COOPER CAMERON CORPORATION
Reel/Frame 008113/0832 →