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

Eduardo Barnetche-Gonzalez

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Double cone cutting head for a drill bit

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

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Multiple stage drag and dynamic turbine downhole motor

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Plural rigidly related blade sets
Patent

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Multiple stage drag turbine downhole motor

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with...
Patent

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Profile ID: LFUS-PAI-P-1377336

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