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Priority to JP1988094538UpriorityCriticalpatent/JPH0539329Y2/ja
Priority to KR1019890010216Aprioritypatent/KR970010516B1/ko
Publication of JPH0221480UpublicationCriticalpatent/JPH0221480U/ja
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Publication of JPH0539329Y2publicationCriticalpatent/JPH0539329Y2/ja