Burkhard Knippenberg

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Berlin, DE

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Patents Grantslast 30 patents

Information Patent Grant
Liquid-crystal mixture with a pleochroic anthraquinone dye, and met...
- Patent number 4,491,532
- Issue date Jan 1, 1985
- Siemens Aktiengesellschaft
- Gunther Scherowsky
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...