Regina Lischewski

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Wolfen, DD

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Patents Grantslast 30 patents

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One- or two-component diazo-type material with diphenyl diamine as...
- Patent number 4,419,431
- Issue date Dec 6, 1983
- VEB Filmfabrik Wolfen
- Regina Lischewski
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY