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Vehicle for cleaning
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Patent number 7,610,650
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Issue date Nov 3, 2009
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Sumco Corporation
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Shunichi Imao
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1508502
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Patent number 1,508,502
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Issue date Sep 16, 1924
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES