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BE1000486A4
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Method and apparatus for treatment of lying under water surfaces.
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BE901110A
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Unit to clean ships hull below water - has frame hauled transversely under hull by cables and with inner swivel frame carrying brushes
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BE900965A
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Scraper to remove barnacles from surface - has driven disc carrying outwardly projecting contoured tapering cutter blades
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DK323384D0
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Apparatus for cleaning walls on structures under the water
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BE897212A
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Scrubber for curved or angular underwater surfaces - has two contra-rotating brushes on pivotably connected frame halves
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