Josef Ritter

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Hofheim am Taunus, DE

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Patents Grantslast 30 patents

Information Patent Grant
Use of colorants for recording fluids
- Patent number 5,102,459
- Issue date Apr 7, 1992
- Hoechst Aktiengesellschaft
- Josef Ritter
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...