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Priority to JP1988151981UpriorityCriticalpatent/JPH0542213Y2/ja
Priority to KR2019890004951Uprioritypatent/KR920008094Y1/ko
Publication of JPH0272763UpublicationCriticalpatent/JPH0272763U/ja
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Publication of JPH0542213Y2publicationCriticalpatent/JPH0542213Y2/ja