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Priority claimed from JP17190793Aexternal-prioritypatent/JP2948443B2/ja
Priority claimed from JP17190893Aexternal-prioritypatent/JP2965438B2/ja
Priority claimed from JP6035541Aexternal-prioritypatent/JP3006991B2/ja
Priority claimed from JP6035704Aexternal-prioritypatent/JP3041182B2/ja
Priority claimed from JP6041575Aexternal-prioritypatent/JPH07246444A/ja
Application filed by Nippon Steel CorpfiledCriticalNippon Steel Corp
Application grantedgrantedCritical
Publication of TW302310BpublicationCriticalpatent/TW302310B/zh