Helwig Teubner

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Hanau, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of hydroxypropyl starch
- Patent number 4,451,649
- Issue date May 29, 1984
- Wolff Walsrode Aktiengesellschaft
- Helwig Teubner
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES