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Priority claimed from JP3058011Aexternal-prioritypatent/JP3070115B2/ja
Priority claimed from JP3062477Aexternal-prioritypatent/JP3030894B2/ja
Priority claimed from JP8338691Aexternal-prioritypatent/JPH04295681A/ja
Application filed by Sony Co LtdfiledCriticalSony Co Ltd
Application grantedgrantedCritical
Publication of TW197519BpublicationCriticalpatent/TW197519B/zh