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Priority claimed from JP62022481Aexternal-prioritypatent/JPH07117511B2/ja
Priority claimed from JP62224018Aexternal-prioritypatent/JPH069519B2/ja
Priority claimed from JP27906087Aexternal-prioritypatent/JPH01124399A/ja
Application filed by Kobe Steel LtdfiledCriticalKobe Steel Ltd
Priority claimed from EP88300815Aexternal-prioritypatent/EP0277789B1/de
Application grantedgrantedCritical
Publication of ATE76436T1publicationCriticalpatent/ATE76436T1/de