4. Pipe joints or couplings
  5. Molded joint
  6. Interlocked

Frank J. Carlin

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Apparatus and method for enhancing fatigue properties of subterr

Wells – Processes – Assembling well part
Patent

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Discountinuous plane weld apparatus and method for enhancing fat

Pipe joints or couplings – Molded joint – Interlocked
Patent

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Drill collar box

Pipe joints or couplings – Particular interface – Tapered
Reexamination Certificate

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Helical stress relief groove apparatus and method for subterrane

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure
Patent

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Horizontal drilling or completion method

Wells – Processes – Assembling well part
Patent

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Profile ID: LFUS-PAI-P-121503

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