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Application filed by Hinrich Krohn, Joern Burmeister, Posselt Hans JuergenfiledCriticalHinrich Krohn
Priority to DD19649876ApriorityCriticalpatent/DD129179B1/de
Publication of DD129179A1publicationCriticalpatent/DD129179A1/de
Publication of DD129179B1publicationCriticalpatent/DD129179B1/de