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Cementitious boards
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Patent number 7,615,504
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Issue date Nov 10, 2009
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Saint Gobain Technical Fabrics America, Inc.
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John Frederick Porter
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D10 - INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEX...
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Multi-layer plasterboard
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Patent number 3,993,822
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Issue date Nov 23, 1976
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Gebr. Knauf Westdeutsche Gipswerke
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Alfons Knauf
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B28 - WORKING CEMENT, CLAY, OR STONE
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1765589
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Patent number 1,765,589
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Issue date Jun 24, 1930
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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906252
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Patent number 906,252
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Issue date Dec 8, 1908
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B28 - WORKING CEMENT, CLAY, OR STONE
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158746
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Patent number 158,746
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Issue date Jan 12, 1875
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B28 - WORKING CEMENT, CLAY, OR STONE