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Pipe joint
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Patent number 7,648,176
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Issue date Jan 19, 2010
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Plexus Ocean Systems, Ltd.
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Bernard Herman Van Bilderbeek
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Pipe joint
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Patent number 7,344,162
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Issue date Mar 18, 2008
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Plexus Ocean Systems Limited
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Bernard Herman Van Bilderbeek
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Clamping well casings
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Patent number 7,111,688
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Issue date Sep 26, 2006
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Plexus Ocean Systems, Ltd.
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Bernard H. vanBilderbeek
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Wellhead
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Patent number 6,571,877
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Issue date Jun 3, 2003
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Plexus Ocean Systems Limited
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Ben Van Bilderbeek
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E21 - EARTH DRILLING MINING
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Washout arrangement for a well
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Patent number 6,095,243
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Issue date Aug 1, 2000
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Plexus Ocean Systems Limited
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Bernard Herman Van Bilderbeek
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E21 - EARTH DRILLING MINING
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Clamping well casings
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Patent number 6,092,596
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Issue date Jul 25, 2000
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Plexus Ocean Systems Limited
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Bernard Herman Van Bilderbeek
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E21 - EARTH DRILLING MINING
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Surface wellhead
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Patent number 4,938,289
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Issue date Jul 3, 1990
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Plexus Ocean Systems Limited
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Bernard H. van Bilderbeek
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E21 - EARTH DRILLING MINING
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Surface wellhead
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Patent number 4,794,988
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Issue date Jan 3, 1989
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Plexus Ocean Systems Limited
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Bernard H. van Bilderbeek
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E21 - EARTH DRILLING MINING