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Earth moving scraper
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Patent number 6,347,670
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Issue date Feb 19, 2002
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Richard B. Miskin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Scraper with ripper assembly
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Patent number 4,553,608
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Issue date Nov 19, 1985
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Richard B. Miskin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Earth moving scraper
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Patent number 4,398,363
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Issue date Aug 16, 1983
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Richard B. Miskin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Earth moving scraper
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Patent number 4,388,769
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Issue date Jun 21, 1983
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Richard B. Miskin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Earth moving scraper
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Patent number 4,383,380
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Issue date May 17, 1983
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Richard B. Miskin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING