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Wire cutting valve actuator

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

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Wire form type insert retainer for a wafer style butterfly valve

Valves and valve actuation – Valve – Seats
Patent

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Wireless remote controlled water shut-off and leak testing...

Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Reexamination Certificate

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Wireless, intrinsically safe valve

Valves and valve actuation – Fluid actuated or retarded – Rotary or oscillatory motor
Reexamination Certificate

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Wireline centralization apparatus and method

Valves and valve actuation – Blow-out preventers – Radial reciprocating ram
Reexamination Certificate

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Wireline valve actuator

Valves and valve actuation – Blow-out preventers
Reexamination Certificate

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Wireline valve inner seal

Valves and valve actuation – Blow-out preventers
Patent

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Worm driving a servo actuator with spring return and rotary...

Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Reexamination Certificate

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