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RU1822893C
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Supporting pillar of self-elevating floating drilling rig substructure and method of operating the same
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Metal hollow pile
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Supporting pillar of self-elevating floating drilling rig substructure
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Wave propulsive device of ship
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Shipъs wave propeller
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Ship wave propeller
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Anchor
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Riser of self-jacking floating drilling rig
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Support column of jack-up offshore drilling rig
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Method of setting offshore floating rig to drilling position
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Arrangement for stopping hole in ship hull
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Support column of floating self-raising offshore platform
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Arrangement for testing pipeline welds
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Down-hole finishing tool
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Caisson
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Device for transporting iceberg
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Floating caisson for repairing ship steel hull
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Caisson
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Anchor
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Sliding shoe of floating rig for sea drilling
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