4. Wells
  5. Processes
  6. Operating valve, closure, or changeable restrictor in a well

Marion H. Gay

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Subsurface safety valves and method and apparatus for their oper

Wells – With below and above ground modification – Above ground actuating means for below ground device
Patent

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Subsurface safety valves and method and apparatus for their oper

Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Patent

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Profile ID: LFUS-PAI-P-1837436

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