-
-
-
-
-
-
-
-
-
High-load big bore lock
-
Patent number 6,516,889
-
Issue date Feb 11, 2003
-
Baker Hughes Incorporated
-
Jeffrey J. Lembcke
-
E21 - EARTH DRILLING MINING
-
-
Annular chamber seal
-
Patent number 6,283,477
-
Issue date Sep 4, 2001
-
Baker Hughes Incorporated
-
Clifford H. Beall
-
E21 - EARTH DRILLING MINING
-
-
-
Annular chamber seal
-
Patent number 6,260,850
-
Issue date Jul 17, 2001
-
Baker Hughes Incorporated
-
Clifford H. Beall
-
E21 - EARTH DRILLING MINING
-
Adjustable orifice valve
-
Patent number 6,158,714
-
Issue date Dec 12, 2000
-
Baker Hughes Incorporated
-
Jeffrey J. Lembcke
-
E21 - EARTH DRILLING MINING
-
-
Annular chamber seal
-
Patent number 5,799,949
-
Issue date Sep 1, 1998
-
Baker Hughes Incorporated
-
Clifford H. Beall
-
E21 - EARTH DRILLING MINING
-
Annular chamber seal
-
Patent number 5,496,044
-
Issue date Mar 5, 1996
-
Baker Hughes Incorporated
-
Clifford H. Beall
-
E21 - EARTH DRILLING MINING