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Application filed by Menzel Karl Heinz, Arnulf Sachsse, Karl WanitschkafiledCriticalMenzel Karl Heinz
Priority to DD19882377ApriorityCriticalpatent/DD131536B1/de
Publication of DD131536A1publicationCriticalpatent/DD131536A1/de
Publication of DD131536B1publicationCriticalpatent/DD131536B1/de