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Application filed by Gerd Siegmeier, Johannes Simank, Helmut Routschek, Mrosk Hans Peter, Wilfried RetschkefiledCriticalGerd Siegmeier
Priority to DD20320578ApriorityCriticalpatent/DD134778B1/de
Publication of DD134778A1publicationCriticalpatent/DD134778A1/de
Publication of DD134778B1publicationCriticalpatent/DD134778B1/de