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Priority claimed from JP62113306Aexternal-prioritypatent/JPS63112951A/ja
Application filed by Asahi Denka Kogyo KkfiledCriticalAsahi Denka Kogyo Kk
Priority claimed from EP87109133Aexternal-prioritypatent/EP0251205B1/de
Application grantedgrantedCritical
Publication of ATE80779T1publicationCriticalpatent/ATE80779T1/de