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

Eduardo B. Gonzalez

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Automatic depth compensating system for drill bit lubrication

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means
Patent

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Body structure and nozzle for enhancing the flow of drilling flu

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

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Self compensating seal apparatus

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft
Patent

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Profile ID: LFUS-PAI-P-619748

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