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Valve
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Patent number 8,316,953
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Issue date Nov 27, 2012
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Red Spider Technology Limited
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Michael A. Reid
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E21 - EARTH DRILLING MINING
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Pressure equalising devices
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Patent number 8,240,376
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Issue date Aug 14, 2012
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Red Spider Technology Limited
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Stuart Gordon
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E21 - EARTH DRILLING MINING
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Protection sleeve
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Patent number 8,201,622
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Issue date Jun 19, 2012
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Red Spider Technology Limited
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Michael A. Reid
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E21 - EARTH DRILLING MINING
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Actuating mechanism
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Patent number 8,196,664
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Issue date Jun 12, 2012
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Red Spider Technology Limited
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Michael A. Reid
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E21 - EARTH DRILLING MINING
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Pressure equalising devices
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Patent number 8,191,629
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Issue date Jun 5, 2012
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Red Spider Technology Limited
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Stuart Gordon
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E21 - EARTH DRILLING MINING
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-
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Injection valve
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Patent number 7,946,347
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Issue date May 24, 2011
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Red Spider Technology Limited
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Michael Adam Reid
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E21 - EARTH DRILLING MINING
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Actuating mechanism
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Patent number 7,748,462
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Issue date Jul 6, 2010
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Red Spider Technology Limited
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Michael Adam Reid
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E21 - EARTH DRILLING MINING
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Injection valve
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Patent number 7,520,329
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Issue date Apr 21, 2009
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Red Spider Technology Limited
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Michael A. Reid
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E21 - EARTH DRILLING MINING