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Roller cutting element construction
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Patent number 10,364,612
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Issue date Jul 30, 2019
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Smith International, Inc.
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Feng Yu
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Rotary drill bits
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Patent number 6,092,613
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Issue date Jul 25, 2000
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Camco International (UK) Limited
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Douglas Caraway
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E21 - EARTH DRILLING MINING
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Rotary drill bits
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Patent number 6,089,336
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Issue date Jul 18, 2000
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Camco International (UK) Limited
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Alex Nexton
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E21 - EARTH DRILLING MINING
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Invertible auger
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Patent number 6,089,334
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Issue date Jul 18, 2000
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Clark Equipment Company
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Verne C. Watts
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E21 - EARTH DRILLING MINING
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Rotary drill bits
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Patent number 5,992,547
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Issue date Nov 30, 1999
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Camco International (UK) Limited
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Douglas Caraway
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E21 - EARTH DRILLING MINING
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Rotary drill bits
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Patent number 5,967,246
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Issue date Oct 19, 1999
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Camco International (UK) Limited
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Douglas Caraway
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E21 - EARTH DRILLING MINING
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Rotary drill bits
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Patent number 5,904,213
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Issue date May 18, 1999
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Camco International (UK) Limited
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Douglas Caraway
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E21 - EARTH DRILLING MINING
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