4. Ships
  5. Floating platform
  6. Multiple leg

Robert Ludwigson

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Drilling device

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

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Method for DP-conversion of an existing semi-submersible rig

Ships – Floating platform – Multiple leg
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2071557

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