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

John Walton McCaskill

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Apparatus and methods for servicing a hydraulic choke

Fluid handling – Processes – Cleaning – repairing – or assembling
Reexamination Certificate

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High pressure valve

Valves and valve actuation – Balanced valves – Reciprocating
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Solids strainer system for a hydraulic choke

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-16320

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