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Ram-type blowout preventer

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

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Ram-type blowout preventer

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

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Ram-type blowout preventer

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

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Ram-type blowout preventer and packer therefor

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

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Rod locking device

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

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Seal structure for elevated temperature service

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

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Valve and a process for removing a closure member of the valve

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

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Valve apparatus

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

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Valve element

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

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Variable bore packer for a ram type blowout preventer

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

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Variable bore packer for a ram-type blowout preventer

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

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Variable bore ram rubber with non-overlapping inserts

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

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Variable ram seal for blowout preventers

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

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Wellhead production blowout preventer

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

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Wellhead production blowout preventer ram

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

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Wire cutting insert for gate valve

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

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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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