4. Hydraulic and earth engineering
  5. Subterranean or submarine pipe or cable laying, retrieving,...
  6. Submerging, raising, or manipulating line of pipe or cable...

Claude Colas

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Method and apparatus for tapping a submerged pipe

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent

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Process for removing a concrete covering

Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent

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Protection mask for surface treatment of turbomachine blades

Abrading – Attachment – To the work
Reexamination Certificate

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Rotary metal brush for removing submerged anti-corrosive coverin

Brushing – scrubbing – and general cleaning – Implements – Brush or broom
Patent

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Profile ID: LFUS-PAI-P-202380

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