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Priority claimed from JP59134479Aexternal-prioritypatent/JPS6115906A/ja
Priority claimed from JP13466084Aexternal-prioritypatent/JPH079021B2/ja
Priority claimed from JP59134659Aexternal-prioritypatent/JPH062891B2/ja
Application filed by Daido Steel Co LtdfiledCriticalDaido Steel Co Ltd
Priority claimed from EP19850107814external-prioritypatent/EP0167915B2/de
Application grantedgrantedCritical
Publication of ATE38058T1publicationCriticalpatent/ATE38058T1/de