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Side snowplow including land leveler
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XUZHOU XUGONG ROAD-CONSTRUCTION MACHINERY CO., LTD.
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Zonghua Song
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Motor grader
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Patent number 7,980,319
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Issue date Jul 19, 2011
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Komatsu Ltd.
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Kenichi Maeda
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Box scraper assembly
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Patent number 7,021,398
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Issue date Apr 4, 2006
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Lorry L. Marshall
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Grading machine
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Issue date Oct 25, 1983
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Harry L. Doss
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING