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

Edward James Cargill

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Anti-rotation device for a steerable rotary drilling device

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides
Reexamination Certificate

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Downhole motor with a continuous conductive path

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type
Reexamination Certificate

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Drill string telemetry system and method

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Drilling direction control device

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...
Reexamination Certificate

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Seal assembly for limiting the movement of a seal within a...

Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for other than internal combustion engine – or...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2056156

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