4. Tool driving or impacting
  5. With work engaging means supporting drive
  6. Structure extends between opposed points

Burckhard Elsner

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Drilling apparatus

Tool driving or impacting – With work engaging means supporting drive – Structure extends between opposed points
Patent

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Mine roof supports

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent

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Two part mine roof support unit

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent

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Profile ID: LFUS-PAI-P-1037033

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