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Priority claimed from JP4058373Aexternal-prioritypatent/JPS5343888B2/ja
Priority claimed from JP4171473Aexternal-prioritypatent/JPS49127822A/ja
Priority claimed from JP4286473Aexternal-prioritypatent/JPS543449B2/ja
Application filed by Kobe Steel LtdfiledCriticalKobe Steel Ltd
Publication of IN142522BpublicationCriticalpatent/IN142522B/en