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Priority to JP1986106001UpriorityCriticalpatent/JPH0315140Y2/ja
Priority to KR1019870002900Aprioritypatent/KR930004471B1/ko
Publication of JPS6313246UpublicationCriticalpatent/JPS6313246U/ja
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Publication of JPH0315140Y2publicationCriticalpatent/JPH0315140Y2/ja