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Priority claimed from JP61098847Aexternal-prioritypatent/JPS62256300A/ja
Priority claimed from JP61100044Aexternal-prioritypatent/JPH0715790B2/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP87303753Aexternal-prioritypatent/EP0246767B1/de
Application grantedgrantedCritical
Publication of ATE100223T1publicationCriticalpatent/ATE100223T1/de