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

James T. Aumann

E - Fixed Constructions – 21 – B

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Bearing system for a downhole motor

E - Fixed Constructions – 21 – B
Patent

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Composite heavy metal drill collar

E - Fixed Constructions – 21 – B
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Coring device with an improved core sleeve and anti-...

E - Fixed Constructions – 21 – B
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Coring device with an improved weighted core sleeve and...

E - Fixed Constructions – 21 – B
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Drill string safety valve

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-79877

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