4. Boring or penetrating the earth
  5. With below-ground tool drive prime mover
  6. With means to anchor prime movers support to bore wall

Sergei Konstantinovich Tupitsyn

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Percussive device for driving holes in soil

Tool driving or impacting – Impacting devices – Selective axial direction of impact
Patent

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Pneumatic percussive power tool

Tool driving or impacting – Impacting devices – Hammer head driven by spring
Patent

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Reversible air-operated apparatus of the percussive type for dri

Boring or penetrating the earth – Boring without earth removal
Patent

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Self-propelled percussive machine for boring holes

Boring or penetrating the earth – With below-ground tool drive prime mover – With means to anchor prime movers support to bore wall
Patent

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Profile ID: LFUS-PAI-P-1026829

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