4. Boring or penetrating the earth
  5. With above-ground means for handling drilling fluid or cutting
  6. Fluid head on tool shaft having lateral port and axial...
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Downhole apparatus

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid head on tool shaft having lateral port and axial...
Reexamination Certificate

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Downhole apparatus

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid head on tool shaft having lateral port and axial...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

External water delivery system for rock drills

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid head on tool shaft having lateral port and axial...
Reexamination Certificate

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Pressure seal for pumping instruments through drill rod

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid head on tool shaft having lateral port and axial...
Patent

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Rotating subsea diverter

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid head on tool shaft having lateral port and axial...
Reexamination Certificate

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Swivel chamber for water actuated wireline drills

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid head on tool shaft having lateral port and axial...
Patent

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