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Bi-directional sealing ram

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

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Bidirectional sealing blowout preventer

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

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Blow-out preventer

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Blow-out protector packer element

Valves and valve actuation – Blow-out preventers
Patent

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Blowout preventer

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

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Blowout preventer

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Blowout preventer

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

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Blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Blowout preventer

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

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Blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Blowout preventer

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

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Blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Blowout preventer

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

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Blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Blowout preventer and improved ram packer structure

Valves and valve actuation – Blow-out preventers
Patent

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Blowout preventer and locking mechanism

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

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Blowout preventer and movable bonnet support

Valves and valve actuation – Blow-out preventers
Reexamination Certificate

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Blowout preventer and movable ram block support

Valves and valve actuation – Blow-out preventers
Reexamination Certificate

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Blowout preventer and ram actuator

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

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