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Priority to JP1986173444UpriorityCriticalpatent/JPH0742118Y2/ja
Priority to CN 87103884prioritypatent/CN87103884A/zh
Publication of JPS6379552UpublicationCriticalpatent/JPS6379552U/ja
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Publication of JPH0742118Y2publicationCriticalpatent/JPH0742118Y2/ja