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Priority claimed from JP55168412Aexternal-prioritypatent/JPS5940702B2/ja
Priority claimed from JP2809381Aexternal-prioritypatent/JPS5940703B2/ja
Application filed by Idemitsu Kosan Company LimitedfiledCriticalIdemitsu Kosan Company Limited
Priority claimed from EP81109030Aexternal-prioritypatent/EP0053282B1/de
Application grantedgrantedCritical
Publication of ATE11516T1publicationCriticalpatent/ATE11516T1/de