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Priority claimed from JP60050344Aexternal-prioritypatent/JPS61209704A/ja
Priority claimed from JP26129585Aexternal-prioritypatent/JPS62124018A/ja
Priority claimed from JP60261294Aexternal-prioritypatent/JPS62124017A/ja
Application filed by Nippon Steel CorpfiledCriticalNippon Steel Corp
Priority claimed from EP86103479Aexternal-prioritypatent/EP0195385B1/de
Application grantedgrantedCritical
Publication of ATE65721T1publicationCriticalpatent/ATE65721T1/de