Erwin Herrmann

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Frankfurt am Main, DT

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Patents Grantslast 30 patents

Information Patent Grant
Sulfo-containing phenol-formaldehyde condensates
- Patent number 4,079,040
- Issue date Mar 14, 1978
- Cassella Farbwerke Mainkur Aktiengesellschaft
- Joachim Ribka
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES