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Priority to JP1986175207UpriorityCriticalpatent/JPH0439028Y2/ja
Priority to KR878700282Uprioritypatent/KR890006815Y1/ko
Publication of JPS6380184UpublicationCriticalpatent/JPS6380184U/ja
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Publication of JPH0439028Y2publicationCriticalpatent/JPH0439028Y2/ja