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Dyes, their preparation and use
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Patent number 4,680,384
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Issue date Jul 14, 1987
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Ciba-Geigy Corporation
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Karl Seitz
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Novel dyes, their preparation and use
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Patent number 4,325,869
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Issue date Apr 20, 1982
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Ciba-Geigy Corporation
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Karl Seitz
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Pyrimidine derivatives
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Patent number 4,082,535
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Issue date Apr 4, 1978
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Ciba-Geigy Corporation
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Karl Hoegerle
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C07 - ORGANIC CHEMISTRY
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