4. Boring or penetrating the earth
  5. Boring a submerged formation

Jenova J. Roberts

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Assembly and floatation method for drilling drivepipe

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Reexamination Certificate

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Assembly and method for jarring a drilling drive pipe into...

Boring or penetrating the earth – Boring a submerged formation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2634716

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