4. Boring or penetrating the earth
  5. With mechanical cleaner for bit or cutter element
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Air groove scraper

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element
Patent

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Auger

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Gage surface scraper

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element
Reexamination Certificate

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Large diameter drill bit

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element
Patent

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Roller cone bits with reduced packing

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element
Reexamination Certificate

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Rotary earth boring drill bit with centrifugal foreign particle

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Sampling tube cleaning device

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element
Patent

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Soil sample core extraction tool

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element
Patent

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