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Patent #:
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Issue Dt:
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11/08/1994
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Application #:
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08178030
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Filing Dt:
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01/06/1994
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Title:
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CEMENTING PLUG
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Patent #:
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Issue Dt:
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05/29/2001
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Application #:
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09326053
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Filing Dt:
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06/04/1999
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Title:
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CEMENTING PLUG
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Patent #:
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Issue Dt:
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10/15/2002
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09469509
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Filing Dt:
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12/22/1999
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Title:
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SCORING TOOL FOR REMOVING SHEATH FROM ELECTRICAL CABLE CONDUCTOR AND METHOD
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Issue Dt:
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11/26/2002
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09655795
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09/06/2000
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Title:
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DUAL DIAMETER CENTRALIZER/SUB AND METHOD
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Patent #:
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Issue Dt:
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01/28/2003
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10054434
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01/18/2002
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Publication #:
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05/23/2002
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Title:
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PRESSURE RELIEF VALVE
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Patent #:
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01/20/2004
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10071734
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02/08/2002
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Pub Dt:
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08/14/2003
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Title:
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MINIMUM CLEARANCE BOW-SPRING CENTRALIZER
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03/29/2005
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10106682
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03/25/2002
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Publication #:
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Pub Dt:
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09/25/2003
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Title:
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CASING CENTRALIZER
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Patent #:
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Issue Dt:
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02/27/2007
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10302641
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11/23/2002
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Publication #:
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Pub Dt:
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04/17/2003
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Title:
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DUAL DIAMETER AND ROTATING CENTRALIZER/SUB AND METHOD
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Patent #:
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01/02/2007
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10719313
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11/21/2003
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Publication #:
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Pub Dt:
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06/17/2004
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Title:
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DUAL DIAMETER AND ROTATING CENTRALIZER/SUB
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Patent #:
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02/10/2009
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11116748
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04/28/2005
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Pub Dt:
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05/18/2006
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Title:
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WEAR RESISTANT LAYER FOR DOWNHOLE WELL EQUIPMENT
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Patent #:
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Issue Dt:
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11/28/2006
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11175126
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Filing Dt:
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07/05/2005
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Publication #:
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Pub Dt:
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11/03/2005
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Title:
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DUAL DIAMETER AND ROTATING CENTRALIZER/SUB AND METHOD
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Patent #:
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06/19/2007
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11326976
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01/06/2006
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Pub Dt:
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07/12/2007
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Title:
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SEAL FOR CONFINED ELECTRICAL CONDUCTOR CABLE
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Issue Dt:
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07/29/2008
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11581956
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10/17/2006
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Publication #:
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Pub Dt:
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04/17/2008
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Title:
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SPLICE FOR DOWN HOLE ELECTRICAL SUBMERSIBLE PUMP CABLE
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12/07/2010
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11749544
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05/16/2007
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11/20/2008
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Title:
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LOW CLEARANCE CENTRALIZER AND METHOD OF MAKING CENTRALIZER
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04/22/2014
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11828943
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07/26/2007
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01/29/2009
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Title:
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APPARATUS FOR AND METHOD OF DEPLOYING A CENTRALIZER INSTALLED ON AN EXPANDABLE CASING STRING
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07/19/2011
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11830206
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07/30/2007
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01/31/2008
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Title:
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ELECTRICAL CONNECTOR FOR INSULATED CONDUCTIVE WIRES ENCAPSULATED IN PROTECTIVE TUBING
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10/30/2012
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12026276
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02/05/2008
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08/07/2008
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Title:
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DOWN HOLE ELECTRICAL CONNECTOR AND METHOD FOR COMBATING RAPID DECOMPRESSION
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02/01/2011
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12042989
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03/05/2008
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11/20/2008
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Title:
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EXPANDABLE CENTRALIZER FOR EXPANDABLE PIPE STRING
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12/15/2009
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12204056
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Filing Dt:
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09/04/2008
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Title:
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THREADED EXPANSION PLUGS
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Issue Dt:
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07/12/2011
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12234568
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Filing Dt:
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09/19/2008
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Pub Dt:
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03/26/2009
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Title:
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ENCLOSED CIRCULATION TOOL FOR A WELL
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Patent #:
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04/26/2011
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12390829
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Filing Dt:
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02/23/2009
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Publication #:
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08/27/2009
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Title:
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STUFFING BOX APPARATUS
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Patent #:
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Issue Dt:
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07/19/2011
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12572653
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10/02/2009
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Publication #:
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Pub Dt:
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01/28/2010
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Title:
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LAMINATE PRESSURE CONTAINING BODY FOR A WELL TOOL
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08/06/2013
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12613383
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11/05/2009
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Pub Dt:
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06/03/2010
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Title:
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FRAC SLEEVE WITH ROTATIONAL INNER DIAMETER OPENING
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10/09/2012
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12613711
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11/06/2009
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06/03/2010
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Title:
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LAMINAR FLOW TOOL
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10/21/2014
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12755981
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04/07/2010
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10/07/2010
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Title:
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FRICTION REDUCING WEAR BAND AND METHOD OF COUPLING A WEAR BAND TO A TUBULAR
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07/01/2014
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12756173
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04/07/2010
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09/02/2010
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Title:
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CASING CENTRALIZERS HAVING FLEXIBLE BOW SPRINGS
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09/16/2014
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12756177
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04/08/2010
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12/30/2010
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INTERFERENCE-FIT STOP COLLAR AND METHOD OF POSITIONING A DEVICE ON A TUBULAR
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11/12/2013
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12836333
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07/14/2010
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11/04/2010
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02/05/2013
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12865684
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09/13/2010
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12/30/2010
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07/30/2013
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12898444
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10/05/2010
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04/07/2011
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03/04/2014
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12913495
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10/27/2010
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06/23/2011
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08/06/2013
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09/03/2010
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01/27/2011
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09/30/2014
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12960716
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12/06/2010
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06/07/2012
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12/31/2013
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12/28/2010
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08/25/2011
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06/12/2012
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02/01/2011
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08/04/2011
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EXPANDABLE CENTRALIZER FOR EXPANDABLE PIPE STRING
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01/05/2016
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02/11/2011
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08/18/2011
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08/21/2012
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07/07/2011
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10/07/2014
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01/31/2013
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09/18/2012
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03/07/2013
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VALVE FOR HYDRAULIC FRACTURING THROUGH CEMENT OUTSIDE CASING
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01/05/2016
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04/14/2015
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05/16/2013
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04/14/2015
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03/20/2012
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09/26/2013
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07/08/2014
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05/21/2012
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09/13/2012
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EXPANDABLE CENTRALIZER FOR EXPANDABLE PIPE STRING
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08/25/2015
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06/28/2012
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01/02/2014
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04/28/2015
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08/29/2012
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09/01/2015
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09/04/2012
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03/07/2013
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06/27/2017
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11/21/2012
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10/25/2016
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06/24/2013
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12/25/2014
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05/29/2018
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06/06/2017
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10/04/2016
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04/19/2016
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05/03/2016
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03/01/2016
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02/06/2014
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04/04/2017
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