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

Detlef Ragnitz

E - Fixed Constructions – 21 – B

Inventor

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Inventor

Country: Germany

Drilling apparatus with motor-driven pump steering control

E - Fixed Constructions – 21 – B
Patent

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Integrated modular connector in a drill pipe

E - Fixed Constructions – 21 – B
Patent

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Lifting chain

B - Operations – Transporting – 66 – F
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Steerable modular drilling assembly

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-1509758

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