4. Wells
  5. Valves, closures or changeable restrictors
  6. Longitudinally movable operator
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Packer annulus differential pressure valve

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Pass through valve and stab tool

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Polished bore receptacle

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Port apparatus for well piping

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Patent

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Port collar assembly for use in a wellbore

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

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Pressure equalization device for downhole tools

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

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Pressure equalizing plunger valve for downhole use

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

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