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

James W. Macfarlane

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Subsea wellbore drilling system for reducing bottom hole...

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

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Subsea wellbore drilling system for reducing bottom hole...

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

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Subsea wellbore drilling system for reducing bottom hole...

Boring or penetrating the earth – Automatic control – Of fluid pressure below ground
Reexamination Certificate

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Tubing handling for subsea oilfield tubing operations

Wells – Submerged well – Connection or disconnection of submerged members remotely...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2442049

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