4. Seal for a joint or juncture
  5. Seal between relatively movable parts
  6. Relatively rotatable radially extending sealing face member

Reggie H. Etheridge

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Piloted wellhead flow control valve

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent

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Piloted wellhead flow control valve

Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Patent

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Rotary to linear valve and method of use

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

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Universal flexbowl wellhead and well completion method

Wells – Processes – Placing or shifting well part
Patent

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X-shaped high pressure sealing structure

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

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Profile ID: LFUS-PAI-P-576598

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