4. Tool driving or impacting
  5. Impacting devices
  6. With means for rotating tool

Roger Masse

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Drill bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent

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Force converter

Machine element or mechanism – Mechanical movements – Reciprocating to reciprocating
Patent

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Impact hammer assembly for drilling rock

Tool driving or impacting – Impacting devices – With means for rotating tool
Patent

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Method and apparatus for drilling hard material

Mining or in situ disintegration of hard material – Processes
Patent

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Profile ID: LFUS-PAI-P-750554

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