4. Earth working
  5. Driven from or guided by stationary object, or anchored
  6. Rotatable about vertical axis

Etienne de Villers

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Excavation system and method

Earth working – Driven from or guided by stationary object – or anchored – Rotatable about vertical axis
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Method and apparatus for assembling and testing a fluid conduit

Measuring and testing – With fluid pressure – Pipe
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3010229

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