4. Boring or penetrating the earth
  5. Bit or bit element
  6. With helical-conveying portion

Siegfried Klaissle

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Boring tool for producing undercuts in holes

Cutting by use of rotating axially moving tool – Tool-support with means to move tool relative to tool-support – To move radially
Patent

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Drilling device

Chucks or sockets – Socket type – Lost motion
Patent

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Rock drill

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion
Patent

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Rock drill with hard metal drilling head

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion
Patent

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Profile ID: LFUS-PAI-P-1104281

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