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Wall assembly
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Patent number 8,268,052
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Issue date Sep 18, 2012
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RWDI Air Inc.
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Xin Qiu
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Wall assembly
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Patent number 8,048,204
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Issue date Nov 1, 2011
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RWDI Air Inc.
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Xin Qiu
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES