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Priority claimed from JP2258233Aexternal-prioritypatent/JP2947602B2/ja
Priority claimed from JP2260242Aexternal-prioritypatent/JP2872790B2/ja
Priority claimed from JP3086372Aexternal-prioritypatent/JP2910296B2/ja
Priority claimed from JP3096349Aexternal-prioritypatent/JP2848011B2/ja
Application filed by Showa Denko KkfiledCriticalShowa Denko Kk
Application grantedgrantedCritical
Publication of TW226339BpublicationCriticalpatent/TW226339B/zh