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Application filed by Peter Barth, Eberhard Guenther, Horst Hoelzel, Werner Kochmann, Wilfried Kramer, Wilhelm Loettge, Kurt Naumann, Tilo Roethling, Gerhard WolterfiledCriticalPeter Barth
Priority to DD19910777ApriorityCriticalpatent/DD131448A1/de
Publication of DD131448A1publicationCriticalpatent/DD131448A1/de