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Priority to JP1988095483UpriorityCriticalpatent/JPH04444Y2/ja
Priority to KR1019890010101Aprioritypatent/KR0139916B1/ko
Publication of JPH0218180UpublicationCriticalpatent/JPH0218180U/ja
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Publication of JPH04444Y2publicationCriticalpatent/JPH04444Y2/ja