4. Boring or penetrating the earth
  5. Below-ground impact members
  6. Fluid-operated

Wassara AB

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Hydraulic drill string

Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Reexamination Certificate

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Liquid driven downhole drilling machine

Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Reexamination Certificate

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Method and device for directional down-hole drilling

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2960691

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