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Mobile surface cleaning machine
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Patent number 5,377,376
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Issue date Jan 3, 1995
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Advance Machine Company
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David Wood
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Mobile surface cleaning machine
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Patent number 5,239,720
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Issue date Aug 31, 1993
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Advance Machine Company
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David Wood
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES