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Priority claimed from JP61297320Aexternal-prioritypatent/JPS63150079A/en
Priority claimed from JP62103732Aexternal-prioritypatent/JPS63270065A/en
Priority claimed from JP7482187Uexternal-prioritypatent/JPH0349714Y2/ja
Application filed by Lead Chem Co LtdfiledCriticalLead Chem Co Ltd
Priority claimed from EP87117480Aexternal-prioritypatent/EP0272492B1/en
Application grantedgrantedCritical
Publication of ATE72631T1publicationCriticalpatent/ATE72631T1/en