4. Wells
  5. Valves, closures or changeable restrictors

Everett H. Smith

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Apparatus for carrying first and second weight loads of a tubing

Pipe joints or couplings – Safety release – With frangible or deformable element
Patent

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Control tool

Wells – Valves – closures or changeable restrictors – Operated by dropped element
Patent

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Latch assembly and method

Wells – Valves – closures or changeable restrictors
Patent

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Method and apparatus for rotating tubing conduits

Wells – Means anchored against rotation in one conduit section for...
Patent

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Plastically deformed seals in downhole tools

Pipe joints or couplings – Particular interface – Tapered
Patent

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Profile ID: LFUS-PAI-P-777285

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