4. Wells
  5. Processes
  6. With indicating, testing, measuring or locating

Marvin W. Justus

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Downhole pump speed control

Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Patent

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Hydraulic control system underflow valve control method and appa

Wells – Processes – With indicating – testing – measuring or locating
Patent

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Motor controller for pumping units

Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent

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Profile ID: LFUS-PAI-P-572122

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