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Pipe coupling
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Patent number 5,498,035
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Issue date Mar 12, 1996
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Thomas L. Blose
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E21 - EARTH DRILLING MINING
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Pipe coupling
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Patent number 5,468,029
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Issue date Nov 21, 1995
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IPSCO Enterprises Inc.
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Thomas L. Blose
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E21 - EARTH DRILLING MINING
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Pipe coupling
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Patent number 5,348,350
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Issue date Sep 20, 1994
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IPSCO Enterprises Inc.
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Thomas L. Blose
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E21 - EARTH DRILLING MINING
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Pipe coupling
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Patent number 5,330,239
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Issue date Jul 19, 1994
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IPSCO Enterprises Inc.
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Thomas L. Blose
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E21 - EARTH DRILLING MINING
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-
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Tubular connection
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Patent number 3,989,284
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Issue date Nov 2, 1976
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Hydril Company
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Thomas L. Blose
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E21 - EARTH DRILLING MINING