Rudolf Wanka

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Osnabruck, DE

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Patents Grantslast 30 patents

Information Patent Grant
Waterproof photographic paper support
- Patent number 4,808,267
- Issue date Feb 28, 1989
- Felix Schoeller, Jr. GmbH & Co. KG
- Alois-Bernhard Kerkhoff
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE