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Application filed by 주식회사 금성사filedCritical주식회사 금성사
Priority to KR2019870019448UpriorityCriticalpatent/KR900009253Y1/en
Publication of KR890012090UpublicationCriticalpatent/KR890012090U/en
Application grantedgrantedCritical
Publication of KR900009253Y1publicationCriticalpatent/KR900009253Y1/en