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

Marvin W. Justus

E - Fixed Constructions – 21 – B

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Downhole pump speed control

G - Physics – 05 – D
Patent

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Hydraulic control system underflow valve control method and...

E - Fixed Constructions – 21 – B
Patent

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Hydraulic pumping unit with a variable speed triplex pump

F - Mech Eng,Light,Heat,Weapons – 04 – B
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Motor controller for pumping units

G - Physics – 05 – D
Patent

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Profile ID: LFCA-PAI-P-12915

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