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

Dreco Energy Services Ltd.

E - Fixed Constructions – 21 – B

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Country: Canada

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A downhole bearing assembly

E - Fixed Constructions – 21 – B
Patent

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A downhole bearing assembly

E - Fixed Constructions – 21 – B
Patent

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Adjustable bent housing

E - Fixed Constructions – 21 – B
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Drive shaft assembly for a downhole motor

F - Mech Eng,Light,Heat,Weapons – 16 – D
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Flow restrictor for mud lubricated earth drilling motors

E - Fixed Constructions – 21 – B
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