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Priority claimed from JP62085543Aexternal-prioritypatent/JPS63250424A/en
Priority claimed from JP8824087Uexternal-prioritypatent/JPH0221759Y2/ja
Priority claimed from JP62193451Aexternal-prioritypatent/JPS6436731A/en
Priority claimed from JP13886287Uexternal-prioritypatent/JPH0354400Y2/ja
Priority claimed from JP15149287Uexternal-prioritypatent/JPH0424399Y2/ja
Application filed by Nippon Steel CorpfiledCriticalNippon Steel Corp
Application grantedgrantedCritical
Publication of KR910003571B1publicationCriticalpatent/KR910003571B1/en