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Priority claimed from JP6616486Aexternal-prioritypatent/JPS62222093A/ja
Priority claimed from JP6793586Aexternal-prioritypatent/JPS62224693A/ja
Priority claimed from JP6793486Aexternal-prioritypatent/JPS62224692A/ja
Application filed by Sumitomo Light Metal IndfiledCriticalSumitomo Light Metal Ind
Priority claimed from EP87302468Aexternal-prioritypatent/EP0242995B1/de
Application grantedgrantedCritical
Publication of ATE58400T1publicationCriticalpatent/ATE58400T1/de