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Ram block carrier for reciprocating ram-type blowout preventer

E - Fixed Constructions – 21 – B
Patent

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Ram block guide system for a ram-type blow out preventer

E - Fixed Constructions – 21 – B
Patent

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Ram blocks for hydrogen sulfide service

E - Fixed Constructions – 21 – B
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Ram bop position sensor

E - Fixed Constructions – 21 – B
Patent

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Ram style tensioner with fixed conductor and floating frame

E - Fixed Constructions – 21 – B
Patent

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Ram type blowout preventers

E - Fixed Constructions – 21 – B
Patent

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Ram-type blowout preventer

E - Fixed Constructions – 21 – B
Patent

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Ram-type blowout preventer

E - Fixed Constructions – 21 – B
Patent

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Ram-type blowout preventer

E - Fixed Constructions – 21 – B
Patent

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Ram-type blowout preventer

E - Fixed Constructions – 21 – B
Patent

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Ram-type blowout preventer and packer therefor

E - Fixed Constructions – 21 – B
Patent

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Ram-type blowout preventer and packer therefor

E - Fixed Constructions – 21 – B
Patent

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Ramp plate and loader for mineral conveyors

E - Fixed Constructions – 21 – C
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Rapid cycle annulus pressure responsive tester valve

E - Fixed Constructions – 21 – B
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Rapidly-retractable hydraulic prop

E - Fixed Constructions – 21 – D
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Ratchet assembly for transmitting movement in a downhole tool

E - Fixed Constructions – 21 – B
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Ratchet/release mechanism for a retrievable well apparatus...

E - Fixed Constructions – 21 – B
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Rate controllable gel for conformance improvement treatment...

E - Fixed Constructions – 21 – B
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Rate gyro wells survey system including nulling system

E - Fixed Constructions – 21 – B
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Rate induced diversion for multi-stage stimulation

E - Fixed Constructions – 21 – B
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