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Application filed by Ernst Unger, Ottfried Riessner, Ulrich Merkel, Erich Correns, Purz Hans Joachim, Schwarz Hans HartmutfiledCriticalErnst Unger
Priority to DD19865877ApriorityCriticalpatent/DD132512A1/en
Publication of DD132512A1publicationCriticalpatent/DD132512A1/en