Hansjorg Vollmann

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Coventry, RI, US

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Patents Grantslast 30 patents

Information Patent Grant
Water-soluble dyestuffs readily convertible into insoluble form and...
- Patent number 3,972,904
- Issue date Aug 3, 1976
- Hoechst Aktiengesellschaft
- Hans-Ulrich von der Eltz
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...