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Application filed by Wilfried Franke, Manfred Karl, Lothar Jaeger, Gerhard MetznerfiledCriticalWilfried Franke
Priority to CS829874ApriorityCriticalpatent/CS247127B1/en
Publication of CS987482A1publicationCriticalpatent/CS987482A1/en
Publication of CS247127B1publicationCriticalpatent/CS247127B1/en