-
-
-
-
Blanking plug assembly
-
Patent number 5,542,475
-
Issue date Aug 6, 1996
-
Cooper Cameron Corporation
-
Edwin C. Turner
-
E21 - EARTH DRILLING MINING
-
-
Bore selector
-
Patent number 5,377,762
-
Issue date Jan 3, 1995
-
Cooper Industries, Inc.
-
Edwin C. Turner
-
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
-
-
Packer assembly
-
Patent number 4,648,448
-
Issue date Mar 10, 1987
-
Tam International, Inc.
-
Lawrence Sanford
-
E21 - EARTH DRILLING MINING
-
-
Subsurface safety valve
-
Patent number 4,287,954
-
Issue date Sep 8, 1981
-
Hydril Company
-
William F. Krause
-
E21 - EARTH DRILLING MINING