4. Boring or penetrating the earth
  5. Processes
  6. Boring curved or redirected bores

Pieter Karel Anton Kapteijn

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Sealing off openings through the wall of a well tubular

Wells – Packers or plugs – Central support has shoulders expanding sealing portion – or...
Reexamination Certificate

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Steerable soil penetration system

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

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Steerable soil penetration system

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

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Profile ID: LFUS-PAI-P-2423149

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