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Riser clamp
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Patent number 9,212,525
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Issue date Dec 15, 2015
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Parker-Hannifin Corporation
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Travis L. Sessions
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Riser clamp
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Patent number 8,950,501
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Issue date Feb 10, 2015
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Parker-Hannifin Corporation
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Travis L. Sessions
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E21 - EARTH DRILLING MINING
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Riser clamp
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Patent number 8,789,605
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Issue date Jul 29, 2014
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Parker-Hannifin Corporation
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Travis L. Sessions
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL