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Priority to JP1989021937UpriorityCriticalpatent/JPH0542496Y2/ja
Priority to KR2019900000451Uprioritypatent/KR920004708Y1/ko
Publication of JPH02116313UpublicationCriticalpatent/JPH02116313U/ja
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Publication of JPH0542496Y2publicationCriticalpatent/JPH0542496Y2/ja