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1:2 chromium complex dyes
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Patent number 6,930,178
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Issue date Aug 16, 2005
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Clariant Finance (BVI) Limited
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Rainer Nusser
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Chromium complexes of mixed azo compounds
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Patent number 4,311,641
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Issue date Jan 19, 1982
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Ciba-Geigy Corporation
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Fabio Beffa
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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2803625
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Patent number 2,803,625
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Issue date Aug 20, 1957
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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2735844
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Patent number 2,735,844
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Issue date Feb 21, 1956
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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1843634
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Patent number 1,843,634
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Issue date Feb 2, 1932
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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1766950
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Patent number 1,766,950
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Issue date Jun 24, 1930
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...