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Priority claimed from JP58040959Aexternal-prioritypatent/JPS59167810A/ja
Priority claimed from JP58046796Aexternal-prioritypatent/JPH0767087B2/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP84901104Aexternal-prioritypatent/EP0144431B1/de
Application grantedgrantedCritical
Publication of ATE57780T1publicationCriticalpatent/ATE57780T1/de