4. Boring or penetrating the earth
  5. Bit or bit element
  6. Rolling cutter bit or rolling cutter bit element

David C. Cobbs

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Geophone implantation system

Communications – electrical: acoustic wave systems and devices – Signal transducers – Receivers
Patent

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Rock cutting tool

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

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Rock saw

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-108541

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