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Application filed by Wladislaw Muchin, Rudolf Herold, Holger Grauke, Dieter KnochefiledCriticalWladislaw Muchin
Priority to DD20817878ApriorityCriticalpatent/DD139136B1/de
Publication of DD139136A1publicationCriticalpatent/DD139136A1/de
Publication of DD139136B1publicationCriticalpatent/DD139136B1/de