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Underreamer having splined torque transmitting connection between telescoping portions for control of cutter position
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Underreamer having cutter arm position indication
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Method of forming a hard facing on the body of a tool
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Expansible drilling tool
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Apparatus for expanding holes
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Coupling
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Apparatus for production of fluids from wells
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Apparatus for cutting multiple tubular conduits
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Downhole tool
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Device for cutting and milling in boreholes
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Method and apparatus for performing multiple operations in well bores
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Expansible subsurface well bore apparatus
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Apparatus for cutting and milling in well bores
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Subsurface well bore apparatus
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