4. Boring or penetrating the earth
  5. With tool shaft detail
  6. Shaft carried guide or protector
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Adjustable gauge downhole drilling assembly

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent

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Adjustable gauge downhole drilling assembly

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Reexamination Certificate

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Adjustable winged centering tool for use in pipes with...

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Apparatus and method for drilling and reaming a borehole

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Reexamination Certificate

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Apparatus for drilling underground arcuate paths and installing

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Apparatus for gripping a shaft or the like

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent

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Apparatus for preventing differential sticking in wells

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent

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Apparatus for use in a wellbore

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent

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Axle, a friction reducing fitting and an axle installation...

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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