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Oil well pipe with threaded joint
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Patent number 8,741,406
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Issue date Jun 3, 2014
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Nippon Steel & Sumitomo Metal Corporation
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Kunio Goto
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Threaded joint for steel pipes
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Patent number 8,409,718
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Issue date Apr 2, 2013
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Nippon Steel & Sumitomo Metal Corporation
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Kunio Goto
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Threaded joint for steel pipes
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Patent number 7,883,118
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Issue date Feb 8, 2011
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Sumitomo Metal Industries, Ltd.
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Kunio Goto
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Novel lubricant epoxides
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Patent number 4,943,383
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Issue date Jul 24, 1990
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Mobil Oil Corporation
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Noyes L. Avery
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2091399
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Patent number 2,091,399
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Issue date Aug 31, 1937
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1955260
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Patent number 1,955,260
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Issue date Apr 17, 1934
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...