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Priority claimed from CH9372/80Aexternal-prioritypatent/CH647933A5/de
Application filed by Kupferdraht Isolierwerk AgfiledCriticalKupferdraht Isolierwerk Ag
Publication of PT74118ApublicationCriticalpatent/PT74118A/de
Publication of PT74118BpublicationCriticalpatent/PT74118B/de