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Priority claimed from JP63277717Aexternal-prioritypatent/JP2509989B2/en
Priority claimed from JP63277718Aexternal-prioritypatent/JP2509990B2/en
Application filed by Yoshie Kurihara, Asahi Denka Kogyo KkfiledCriticalYoshie Kurihara
Publication of SG50520A1publicationCriticalpatent/SG50520A1/en