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

Gary Chunn

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Bits and cutting structures

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

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Bonding of cutters in diamond drill bits

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

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Profile ID: LFUS-PAI-P-2350826

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