4. Hydraulic and earth engineering
  5. Foundation
  6. Columnar structure

David Sherwood

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Hole-boring method and system for making cast-in-situ piles

Boring or penetrating the earth – Processes
Reexamination Certificate

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Machine for making bored piles

Hydraulic and earth engineering – Foundation – Columnar structure
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2538990

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