4. Fluid handling
  5. Removable valve head and seat unit

Tosh Miyagishima

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Composite seal

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Front packer seal for ram blowout preventer

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Inside blowout preventer well tool

Wells – Valves – closures or changeable restrictors – Operated by dropped element
Patent

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Internal mud saver valve

Fluid handling – Removable valve head and seat unit
Patent

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Subsurface well apparatus

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

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Profile ID: LFUS-PAI-P-777098

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