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Priority claimed from DE3111353Aexternal-prioritypatent/DE3111353C2/en
Application filed by Stockburger H, Winderlich Hans GeorgfiledCriticalStockburger H
Publication of NO823905LpublicationCriticalpatent/NO823905L/en
Publication of NO154855BpublicationCriticalpatent/NO154855B/en
Publication of NO154855CpublicationCriticalpatent/NO154855C/en