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Dragline chain
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Patent number 9,869,072
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Issue date Jan 16, 2018
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Caterpillar Inc.
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Michael Robert Stolz
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Endless chain type cutter
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Patent number 6,421,938
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Issue date Jul 23, 2002
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Kobe Steel, Ltd.
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Katsumi Kitanaka
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Bucket dredger
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Patent number 6,108,947
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Issue date Aug 29, 2000
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IHC Holland N. V.
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Jacob Brand
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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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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3896567
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Patent number 3,896,567
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Issue date Jul 29, 1975
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3206876
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Patent number 3,206,876
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Issue date Sep 21, 1965
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3054199
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Patent number 3,054,199
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Issue date Sep 18, 1962
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2763945
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Patent number 2,763,945
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Issue date Sep 25, 1956
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2641855
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Patent number 2,641,855
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Issue date Jun 16, 1953
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2523958
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Patent number 2,523,958
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Issue date Sep 26, 1950
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2398786
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Patent number 2,398,786
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Issue date Apr 23, 1946
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2353685
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Patent number 2,353,685
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Issue date Jul 18, 1944
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2330409
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Patent number 2,330,409
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Issue date Sep 28, 1943
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2292249
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Patent number 2,292,249
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Issue date Aug 4, 1942
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2253448
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Patent number 2,253,448
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Issue date Aug 19, 1941
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2228546
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Patent number 2,228,546
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Issue date Jan 14, 1941
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2211997
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Patent number 2,211,997
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Issue date Aug 20, 1940
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2195404
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Patent number 2,195,404
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Issue date Apr 2, 1940
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2191448
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Patent number 2,191,448
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Issue date Feb 27, 1940
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2181125
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Patent number 2,181,125
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Issue date Nov 28, 1939
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2181675
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Patent number 2,181,675
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Issue date Nov 28, 1939
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2176840
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Patent number 2,176,840
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Issue date Oct 17, 1939
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2164376
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Patent number 2,164,376
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Issue date Jul 4, 1939
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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2159961
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Patent number 2,159,961
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Issue date May 30, 1939
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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2158348
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Patent number 2,158,348
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Issue date May 16, 1939
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2150354
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Patent number 2,150,354
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Issue date Mar 14, 1939
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING