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Priority to JP1989040288UpriorityCriticalpatent/JPH0720910Y2/ja
Priority to KR2019900003175Uprioritypatent/KR930000555Y1/ko
Publication of JPH02131327UpublicationCriticalpatent/JPH02131327U/ja
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Publication of JPH0720910Y2publicationCriticalpatent/JPH0720910Y2/ja