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Priority claimed from JP4245511Aexternal-prioritypatent/JPH0667683A/ja
Priority claimed from JP4257188Aexternal-prioritypatent/JPH0683378A/ja
Application filed by Sony Co LtdfiledCriticalSony Co Ltd
Application grantedgrantedCritical
Publication of TW274676BpublicationCriticalpatent/TW274676B/zh