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

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

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Ball type shut in tool

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

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Ball valve seat and support

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Bypass sub

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Bypass valve

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

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