4. Boring or penetrating the earth
  5. Bit or bit element
  6. Nonsymmetrical bit

Jerry Cerkovnik

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Anti-whirl drill bit

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit
Patent

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Anti-whirl drill bit

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit
Patent

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Nozzle placement in a diamond rotating bit including a pilot bit

Boring or penetrating the earth – Processes – Boring with specific fluid
Patent

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Self-renewing multi-element cutting structure for rotary drag bi

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet
Patent

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Profile ID: LFUS-PAI-P-502407

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