4. Boring or penetrating the earth
  5. Boring without earth removal
  6. Combined with earth removal

Anatoly M. Petreev

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Method of making holes in the soil and apparatus for performing

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
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Percussive air tool

Tool driving or impacting – Impacting devices – Hammer head constitutes piston of drive motor
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Profile ID: LFUS-PAI-P-884412

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