4. Boring or penetrating the earth
  5. Bit or bit element
  6. Nonsymmetrical bit

Goran Palmberg

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Percussion rock drill bit

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit
Patent

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Rock drill having an internal flushing channel

Boring or penetrating the earth – Bit or bit element – Impact or percussion type
Patent

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Profile ID: LFUS-PAI-P-1240612

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