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Priority to JP1989101623UpriorityCriticalpatent/JPH0619267Y2/ja
Priority to KR2019900010733Uprioritypatent/KR920007597Y1/ko
Publication of JPH0339990UpublicationCriticalpatent/JPH0339990U/ja
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Publication of JPH0619267Y2publicationCriticalpatent/JPH0619267Y2/ja