Hans-Gunter Donner

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Odenthal, DE

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Patents Grantslast 30 patents

Information Patent Grant
Regeneration of spent developers
- Patent number 4,680,123
- Issue date Jul 14, 1987
- Agfa-Gevaert Aktiengesellschaft
- Ubbo Wernicke
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY