4. Fluid handling
  5. Line condition change responsive valves
  6. Direct response valves

National-Oilwell L.P.

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Alloy steel roll caster shell

Alloys or metallic compositions – Ferrous – Chromium containing – but less than 9 percent
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Automated system for positioning and supporting the work...

Wells – Above ground apparatus
Reexamination Certificate

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Automated system for positioning and supporting the work...

Wells – Above ground apparatus
Reexamination Certificate

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Automated system for positioning and supporting the work...

Wells – Above ground apparatus
Reexamination Certificate

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BOP handling system

Wells – Processes – Assembling well part
Reexamination Certificate

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