Heinz Hanel

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Offenbach, DE

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Patents Grantslast 30 patents

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Preparation of anilino azo carbazole dyestuffs prepared by diazotiz...
- Patent number 4,472,307
- Issue date Sep 18, 1984
- Cassella Aktiengesellschaft
- Ulrich Buhler
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...