4. Metal tools and implements, making
  5. Blank or process
  6. Drill

Eastman Christensen Company

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Apparatus for establishing hydraulic flow regime in drill bits

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element
Patent

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Apparatus for optional straight or directional drilling undergro

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

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Apparatus for the generation of pressure pulses in drilling mud

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
Patent

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Articulated downhole surveying instrument assembly

Boring or penetrating the earth – With signaling – indicating – testing or measuring
Patent

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Bit design for a rotating bit incorporating synthetic polycrysta

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet
Patent

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Profile ID: LFUS-PAI-P-70467

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