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Application filed by Naumburger Volkmar, Jaeger Gert, Eberhard WiedemuthfiledCriticalNaumburger Volkmar
Priority to DD23808782ApriorityCriticalpatent/DD205043B1/de
Publication of DD205043A1publicationCriticalpatent/DD205043A1/de
Publication of DD205043B1publicationCriticalpatent/DD205043B1/de