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Priority claimed from JP56002043Aexternal-prioritypatent/JPS57117081A/en
Priority claimed from JP56048400Aexternal-prioritypatent/JPS57163887A/en
Priority claimed from JP56099620Aexternal-prioritypatent/JPS582687A/en
Application filed by Toshiba KkfiledCriticalToshiba Kk
Priority claimed from EP82300076Aexternal-prioritypatent/EP0057972B1/en
Application grantedgrantedCritical
Publication of ATE22743T1publicationCriticalpatent/ATE22743T1/en