Helmut Durr

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Frankfurt am Main, DT

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Patents Grantslast 30 patents

Information Patent Grant
Melamine-formaldehyde condensates and mixtures thereof
- Patent number 4,039,493
- Issue date Aug 2, 1977
- Cassella Farbwerke Mainkur Aktiengesellschaft
- Manfred Schon
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...