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Priority to JP1986146453UpriorityCriticalpatent/JPH0618022Y2/ja
Priority to KR870010685Aprioritypatent/KR880004201A/ko
Publication of JPS6352911UpublicationCriticalpatent/JPS6352911U/ja
Priority to KR9218892Uprioritypatent/KR930000623Y1/ko
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Publication of JPH0618022Y2publicationCriticalpatent/JPH0618022Y2/ja