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Abrasive wear-resistant hardfacing materials, drill bits and...

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

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Active gauge cutting structure for earth boring drill bits

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

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Apparatus for mounting PCD compacts

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

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Apparatus for treating rock surrounding a wellbore

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

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Asymmetric compact for drill bit

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

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Asymmetrical PDC cutter

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

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Attack tool insert with polycrystalline diamond layer

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

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Axisymmetric cutting element

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

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