4. Boring or penetrating the earth
  5. Processes

Jack T. Oldham

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Bi-center drill bit with enhanced stabilizing features

Boring or penetrating the earth – Processes
Patent

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Casing and liner drilling bits

Boring or penetrating the earth – Bit or bit element – Casing shoe type
Reexamination Certificate

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Casing and liner drilling bits

Boring or penetrating the earth – Bit or bit element – Casing shoe type
Reexamination Certificate

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Casing and liner drilling bits and reamers

Boring or penetrating the earth – Bit or bit element – Casing shoe type
Reexamination Certificate

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Cutting elements configured for casing component drillout...

Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate

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Profile ID: LFUS-PAI-P-912899

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