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Asymmetric retaining wall block
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Publication number 20080053030
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Publication date Mar 6, 2008
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Mortarless Technologies, LLC
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Raymond R. Price
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B28 - WORKING CEMENT, CLAY, OR STONE
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Dividable paving slabs
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Publication number 20070166102
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Publication date Jul 19, 2007
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Michel Cornaz
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B28 - WORKING CEMENT, CLAY, OR STONE
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Brick kit
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Publication number 20050252122
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Publication date Nov 17, 2005
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Peter Geiger
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B28 - WORKING CEMENT, CLAY, OR STONE
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