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Application filed by Konrad Reuter, Heinz Mueller, Kurt Markel, Gerhard Schaller, Christoph Michels, Hartmut FranzfiledCriticalKonrad Reuter
Priority to DD19671876ApriorityCriticalpatent/DD128939A1/de
Publication of DD128939A1publicationCriticalpatent/DD128939A1/de