4. E - Fixed Constructions
  5. 21
  6. B

Thomas E. Winship

E - Fixed Constructions – 21 – B

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Method for making upset ends on metal pipe and resulting...

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Raise drilling bit with detachable stem

E - Fixed Constructions – 21 – B
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Thread for high torque joint

E - Fixed Constructions – 21 – B
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Ultra high torque double shoulder tool joint

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Variable depth grooved drill string member

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-776041

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