Hans Wasem

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Basel, CH

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Patents Grantslast 30 patents

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Azo pigments having two 2-halo-5-trifluoromethylphenyl diazo compon...
- Patent number 4,051,121
- Issue date Sep 27, 1977
- Sandoz Ltd.
- Boris Tcherkinsky
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...