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Power tong
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Patent number 6,082,224
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Issue date Jul 4, 2000
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Weatherford/Lamb, Inc.
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Gary McDaniels
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Joint compensator
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Patent number 5,850,877
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Issue date Dec 22, 1998
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Weatherford/Lamb, Inc.
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Stephen L. Albright
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E21 - EARTH DRILLING MINING
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Releasing tool
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Patent number 5,577,566
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Issue date Nov 26, 1996
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Weatherford U.S., Inc.
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Stephen L. Albright
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E21 - EARTH DRILLING MINING
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Tong with floating jaws
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Patent number 5,207,128
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Issue date May 4, 1993
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Weatherford-Petco, Inc.
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Stephen L. Albright
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E21 - EARTH DRILLING MINING