4. Boring or penetrating the earth
  5. Means traveling with tool to constrain tool to bore along...
  6. Sectional guide or shaft having means to lock sections in...

Hard Rock Drilling & Fabrication, L.L.C.

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Steerable horizontal subterranean drill bit

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Reexamination Certificate

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Steerable horizontal subterranean drill bit having a one...

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Reexamination Certificate

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Steerable horizontal subterranean drill bit having an offset...

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Reexamination Certificate

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Steerable horizontal subterranean drill bit having elevated...

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Steerable horizontal subterranean drill bit having offset...

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

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