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Priority claimed from JP19032785Aexternal-prioritypatent/JPS6250416A/en
Priority claimed from JP19261085Aexternal-prioritypatent/JPS6252313A/en
Priority claimed from JP19260685Aexternal-prioritypatent/JPS6252310A/en
Priority claimed from JP19260785Aexternal-prioritypatent/JPS6252311A/en
Priority claimed from JP19260985Aexternal-prioritypatent/JPS6252312A/en
Application filed by Nippon Kokan KkfiledCriticalNippon Kokan Kk
Publication of IT8648018A0publicationCriticalpatent/IT8648018A0/en
Application grantedgrantedCritical
Publication of IT1191273BpublicationCriticalpatent/IT1191273B/en