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

David A. Conroy

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Impregnated diamond cutting structures

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

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Impregnated diamond cutting structures

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

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Method of forming impregnated diamond cutting structures

Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2405830

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