4. Static structures (e.g., buildings)
  5. Conical or radially ribbed cover

Carl Rowald

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Inserts for drilling bits

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

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Multiple rise cover

Static structures (e.g. – buildings) – Conical or radially ribbed cover
Patent

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Profile ID: LFUS-PAI-P-582904

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