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Priority claimed from JP58012713Aexternal-prioritypatent/JPS59139726A/en
Priority claimed from JP58012711Aexternal-prioritypatent/JPH0773204B2/en
Priority claimed from JP58012712Aexternal-prioritypatent/JPS59139725A/en
Priority claimed from GB08401959Aexternal-prioritypatent/GB2135148B/en
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Publication of SG77588GpublicationCriticalpatent/SG77588G/en