4. Boring or penetrating the earth
  5. Processes
  6. Boring curved or redirected bores

Huy D. Bui

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Air percussion drilling assembly

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

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Air percussion drilling assembly

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

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Air percussion drilling assembly for directional drilling applic

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Air percussion drilling assembly for directional drilling applic

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Drill bit with large inserts

Boring or penetrating the earth – Bit or bit element – Impact or percussion type
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1308698

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