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Lift-through head and swivel
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Patent number 4,995,457
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Issue date Feb 26, 1991
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Halliburton Company
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Morris G. Baldridge
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E21 - EARTH DRILLING MINING
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Cement head and plug
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Patent number 4,917,184
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Issue date Apr 17, 1990
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Halliburton Company
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T. Austin Freeman
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E21 - EARTH DRILLING MINING
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Grout distribution system
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Patent number 4,320,992
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Issue date Mar 23, 1982
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Halliburton Company
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Morris G. Baldridge
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Pile wiper seal
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Patent number 4,311,414
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Issue date Jan 19, 1982
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Halliburton Company
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Morris G. Baldridge
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING