4. Tool driving or impacting
  5. Impacting devices
  6. Impact transmitting anvil

Bernt S. Liljekvist

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Boring head

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

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Drill bit

Tool driving or impacting – Work cleansing – Cleansing fluid passage in impact transmitting anvil
Patent

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Drill element for percussion drilling

Tool driving or impacting – Impacting devices – Impact transmitting anvil
Patent

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Guiding device for percussion drills

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent

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Method and device in earth cutting

Boring or penetrating the earth – Processes
Patent

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Profile ID: LFUS-PAI-P-926223

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