4. Boring or penetrating the earth
  5. Processes
  6. Boring with specific fluid

National Oilwell Varco LP

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Corporate Assignee

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Curvature conformable gripping dies

Tools – Wrench – screwdriver – or driver therefor – Machine
Reexamination Certificate

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Methods for recovery and reuse of lost circulation material

Boring or penetrating the earth – Processes – Boring with specific fluid
Reexamination Certificate

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