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Carry scraper ships
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Patent number 5,778,568
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Issue date Jul 14, 1998
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Kaneto Toyoshima
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Ocean floor dredging
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Patent number 4,937,956
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Issue date Jul 3, 1990
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Manaco International
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Miloslav Malecha
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Endless belt dredger
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Patent number 4,430,812
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Issue date Feb 14, 1984
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IHC Holland N.V.
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Arie Van der Ent
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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-
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Nodule dredging bucket
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Patent number 4,185,404
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Issue date Jan 29, 1980
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Centre National Pour l'Exploitation des Oceans (CNEXO)
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Jean-Pierre Hue
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3874101
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Patent number 3,874,101
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Issue date Apr 1, 1975
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3864851
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Patent number 3,864,851
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Issue date Feb 11, 1975
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3766671
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Patent number 3,766,671
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Issue date Oct 23, 1973
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3734564
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Patent number 3,734,564
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Issue date May 22, 1973
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3680232
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Patent number 3,680,232
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Issue date Aug 1, 1972
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3675348
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Patent number 3,675,348
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Issue date Jul 11, 1972
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3672079
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Patent number 3,672,079
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Issue date Jun 27, 1972
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3540194
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Patent number 3,540,194
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Issue date Nov 17, 1970
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3314174
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Patent number 3,314,174
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Issue date Apr 18, 1967
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3146537
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Patent number 3,146,537
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Issue date Sep 1, 1964
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2941344
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Patent number 2,941,344
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Issue date Jun 21, 1960
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2765548
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Patent number 2,765,548
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Issue date Oct 9, 1956
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2636288
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Patent number 2,636,288
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Issue date Apr 28, 1953
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING