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Application filed by Sabine Lieberwirth, Wolfgang Jentsch, Edgar Schlichting, Kurt ArnoldfiledCriticalSabine Lieberwirth
Priority to DD19803777ApriorityCriticalpatent/DD130551B1/de
Publication of DD130551A1publicationCriticalpatent/DD130551A1/de
Publication of DD130551B1publicationCriticalpatent/DD130551B1/de