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Priority claimed from JP55187534Aexternal-prioritypatent/JPS57113459A/ja
Priority claimed from JP1981088563Uexternal-prioritypatent/JPS6215892Y2/ja
Priority claimed from JP56155575Aexternal-prioritypatent/JPS5857666A/ja
Priority claimed from AT0565281Aexternal-prioritypatent/AT378072B/de
Application filed by Sony CorpfiledCriticalSony Corp
Publication of ATA125584ApublicationCriticalpatent/ATA125584A/de
Application grantedgrantedCritical
Publication of AT391377BpublicationCriticalpatent/AT391377B/de