4. Wells
  5. Automatic

Mark C. Flohr

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Drilling choke pressure limiting control system

Wells – Automatic
Patent

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Pneumatic stepping actuator positioner

Motors: expansible chamber type – Independently operated timer – delay – pattern or cyclic control – Of independently movable working members
Patent

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Pneumatic well casing pressure regulating system

Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Patent

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Profile ID: LFUS-PAI-P-318687

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