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Admixture for cement
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Patent number 5,653,796
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Issue date Aug 5, 1997
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Dipsol Chemicals Co., Ltd.
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Masaru Kawai
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Cement and concrete mixture
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Patent number 4,231,801
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Issue date Nov 4, 1980
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Associated Concrete Products, Inc.
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Harvey R. Dunton
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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2104353
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Patent number 2,104,353
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Issue date Jan 4, 1938
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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1875897
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Patent number 1,875,897
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Issue date Sep 6, 1932
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES