4. Wells
  5. Processes
  6. Placing or shifting well part

Paul L. Tasson

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Bidirectional sealing blowout preventer

Valves and valve actuation – Blow-out preventers – Radial reciprocating ram
Reexamination Certificate

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Parallel expanding gate valve

Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve
Patent

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Rotating blowout preventer and method

Wells – Processes – Placing or shifting well part
Patent

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Rotating blowout preventer and method

Wells – Processes – Placing or shifting well part
Reissue Patent

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Rotating blowout preventer and method

Wells – Processes – Placing or shifting well part
Patent

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Profile ID: LFUS-PAI-P-504068

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