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Priority claimed from JP632982Aexternal-prioritypatent/JPS58125206A/ja
Priority claimed from JP632882Aexternal-prioritypatent/JPS58125205A/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP83300265Aexternal-prioritypatent/EP0084952B1/de
Application grantedgrantedCritical
Publication of ATE36616T1publicationCriticalpatent/ATE36616T1/de