-
Subsurface well apparatus
-
Patent number 6,055,213
-
Issue date Apr 25, 2000
-
Baker Hughes Incorporated
-
Richard P. Rubbo
-
E21 - EARTH DRILLING MINING
-
Packer
-
Patent number 5,904,207
-
Issue date May 18, 1999
-
Petroleum Engineering Services Limited
-
Richard P. Rubbo
-
E21 - EARTH DRILLING MINING
-
Metal seal well packer
-
Patent number 5,685,369
-
Issue date Nov 11, 1997
-
ABB Vetco Gray Inc.
-
Steven C. Ellis
-
E21 - EARTH DRILLING MINING
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-
-
Retrievable packer
-
Patent number 5,273,109
-
Issue date Dec 28, 1993
-
Napoleon Arizmendi
-
E21 - EARTH DRILLING MINING