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Application filed by 주식회사 금성사filedCritical주식회사 금성사
Priority to KR2019870012833UpriorityCriticalpatent/KR900008502Y1/en
Publication of KR890003881UpublicationCriticalpatent/KR890003881U/en
Application grantedgrantedCritical
Publication of KR900008502Y1publicationCriticalpatent/KR900008502Y1/en