4. E - Fixed Constructions
  5. 21
  6. B

Melvyn F. Whitby

E - Fixed Constructions – 21 – B

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Inventor

Country: United States Of America

Actuator with automatic lock

F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent

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Blowout preventer operator locking system

E - Fixed Constructions – 21 – B
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Dual-cylinder blowout preventer operator system

E - Fixed Constructions – 21 – B
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Fluid saving blowout preventer operator system

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-1685478

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