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GB969727A
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A derrick,particularly for turning the lateral suction tube of a dredger inboard andoutboard
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DE867529C
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Stone box, especially for equipment for dredging with water delivery
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GB690264A
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Stone-retaining casing for hydraulic discharge of dredging installations
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DE867528C
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Device for shielding the floor opening in suction dredgers
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GB620489A
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Improvements in or relating to suction dredgers
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GB608179A
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Improvements in or relating to suction dredgers
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GB620035A
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Improvements in or relating to suction dredgers
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DE848778C
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Device on a suction excavator for lifting and lowering a flexible suction pipe
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