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Priority claimed from JP58000861Aexternal-prioritypatent/JPS59126374A/ja
Priority claimed from JP376083Uexternal-prioritypatent/JPS59111361U/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP84300082Aexternal-prioritypatent/EP0116398B1/de
Application grantedgrantedCritical
Publication of ATE29094T1publicationCriticalpatent/ATE29094T1/de