4. Bearings
  5. Rotary bearing
  6. Plain bearing

Thomas M. Dennis

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Bearing assembly incorporating shield ring precluding erosion

Bearings – Rotary bearing – Roller drill bit
Patent

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Bearing assembly with sidewall-brazed PCD plugs

Bearings – Rotary bearing – Plain bearing
Patent

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Bifurcated drill bit construction

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

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Cutting element for drill bits

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

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Data set network diagnostic system

Pulse or digital communications – Repeaters – Testing
Patent

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Profile ID: LFUS-PAI-P-66834

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