4. Hydraulic and earth engineering
  5. Marine structure or fabrication thereof
  6. Floatable to site and supported by marine floor

Derek T. Fern

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Construction of jackets

Hydraulic and earth engineering – Marine structure or fabrication thereof – Floatable to site and supported by marine floor
Patent

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Lifting gear and testing it

Handling: hand and hoist-line implements – Grapple – Lewises
Patent

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Offshore structure and method of sinking same

Hydraulic and earth engineering – Marine structure or fabrication thereof – In or on frozen media
Patent

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Underwater pipeline sealing apparatus

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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Profile ID: LFUS-PAI-P-1049782

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