4. Spring devices
  5. Resilient shock or vibration absorber
  6. Including energy absorbing means or feature

Pierre Lecour

Inventor

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Drilling head with a cone rock bit

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

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Drilling tool with shock absorbers

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

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Hydroelastic suspension device for mobile self-lift drilling pla

Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent

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Profile ID: LFUS-PAI-P-1745617

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