4. Wells
  5. Valves, closures or changeable restrictors
  6. Fluid operated

Wolfgang Peetz

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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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Drill bit tube

Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion
Patent

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Drilling bit

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

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Drilling device

Chucks or sockets – Socket type – Lost motion
Patent

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Drilling tool

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure
Patent

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Profile ID: LFUS-PAI-P-255154

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