4. Wells
  5. Valves, closures or changeable restrictors
  6. Longitudinally movable operator

Thomas G. Corbett

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Auto entry guide

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Delayed acting gravel pack fluid loss valve

Wells – Receptacles – Valve control means contacting well conduit wall
Reexamination Certificate

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Gravel pack crossover tool with check valve in the...

Wells – Processes – Graveling or filter forming
Reexamination Certificate

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Gravel pack crossover tool with single position...

Wells – Processes – Graveling or filter forming
Reexamination Certificate

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Multi-function indicating tool

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2223802

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