4. Boring or penetrating the earth
  5. With above-ground means for handling drilling fluid or cutting
  6. Fluid or cuttings directing or receiving means engaging bore...
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Self positioning dust seal holder

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Patent

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Separation of evolved gases from drilling fluids in a...

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Reexamination Certificate

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Separation of evolved gases from drilling fluids in a...

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Slurry diverter

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Patent

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Soil sampler

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Patent

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Solids strainer system for a hydraulic choke

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Reexamination Certificate

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Suction attachment for a drilling tool

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Patent

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Surge device for air drilling

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Reexamination Certificate

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