SU1442615A1
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Slurry conduit of suction dredger
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SU1229444A1
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Suction dredge wheel
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SU1057632A1
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Scooping arrangement for suction dredge
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SU998646A1
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Ship-passage lock
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SU901400A1
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Soil removal device
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SU962093A1
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Earth hold of earth-carrying scow
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SU763522A1
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Device for preventing ice formation
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SU815150A1
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Dredger scoop
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SU867996A1
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Floating repair gate
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SU715383A1
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Ice-breaking/ice-cleaning attachment
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SU654485A1
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Ice-breaking and ice-cleaning attachment
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SU622926A1
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Navigation lock
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SU620608A1
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Device for cleaning dredger soil-gathering member
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SU581286A1
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Sludge conduit for dredger
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