4. Hydraulic and earth engineering
  5. Subterranean or submarine pipe or cable laying, retrieving,...
  6. With forming or cutting of pipe or cable

Allan T. Fisk

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Apparatus and method for internally sealing pipes

Pipes and tubular conduits – Repairing – Patches
Patent

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Boring apparatus

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means
Patent

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Drag bit excavation

Mining or in situ disintegration of hard material – Processes – With material-handling
Patent

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Guided mole

Boring or penetrating the earth – Processes – Boring with specific fluid
Patent

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Guided mole

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Repair – replacement – or improvement
Patent

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Profile ID: LFUS-PAI-P-283297

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