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Application filed by Eberhard Schuetze, Wolfgang AckermannfiledCriticalEberhard Schuetze
Priority to DD19409876ApriorityCriticalpatent/DD126803B1/de
Publication of DD126803A1publicationCriticalpatent/DD126803A1/de
Publication of DD126803B1publicationCriticalpatent/DD126803B1/de