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Priority claimed from JP27467784Aexternal-prioritypatent/JPS61154735A/ja
Priority claimed from JP59274676Aexternal-prioritypatent/JPS61154734A/ja
Application filed by Nippon Kokan KkfiledCriticalNippon Kokan Kk
Priority claimed from EP85309343Aexternal-prioritypatent/EP0187513B1/de
Application grantedgrantedCritical
Publication of ATE40860T1publicationCriticalpatent/ATE40860T1/de