-
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Interference warning device
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Patent number 4,613,849
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Issue date Sep 23, 1986
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Hughes Tool Company
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Roger Smith
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E21 - EARTH DRILLING MINING
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Beam type racking system
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Patent number 4,462,733
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Issue date Jul 31, 1984
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Hughes Tool Company
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Faustyn C. Langowski
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E21 - EARTH DRILLING MINING
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Pipe manipulator
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Patent number 4,345,864
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Issue date Aug 24, 1982
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BJ-Hughes Inc.
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Roger Smith
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E21 - EARTH DRILLING MINING
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Pipe gripping head
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Patent number 4,304,433
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Issue date Dec 8, 1981
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BJ-Hughes Inc.
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Faustyn C. Langowski
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E21 - EARTH DRILLING MINING
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Pipe handling head
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Patent number 4,030,746
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Issue date Jun 21, 1977
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BJ-Hughes Inc.
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Faustyn Cornell Langowski
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B66 - HOISTING LIFTING HAULING
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Guide head for pipe rackers
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Patent number 3,937,514
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Issue date Feb 10, 1976
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Byron Jackson Inc.
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Faustyn C. Langowski
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E21 - EARTH DRILLING MINING
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Head for pipe rackers
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Patent number 3,937,515
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Issue date Feb 10, 1976
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Byron Jackson Inc.
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Faustyn C. Langowski
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E21 - EARTH DRILLING MINING