4. Valves and valve actuation
  5. Balanced valves
  6. Reciprocating

Ricardo Moreira Seixas

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Balanced retention valve

Valves and valve actuation – Balanced valves – Reciprocating
Patent

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Flowline connection system

Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent

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Subsea pig launcher and method of using the same

Wells – With below and above ground modification – Head for tool – piston or cleaner
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1407988

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