4. Boring or penetrating the earth
  5. Bit or bit element
  6. Plural separable cutter elements

William A. Dziak

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Cutter mounting and apparatus and method for a drill bit

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements
Patent

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Wear collar device for rotatable cutter bit

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
Patent

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Profile ID: LFUS-PAI-P-845316

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