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Priority to JP15585687UpriorityCriticalpatent/JPH0431575Y2/ja
Priority to CN 88220589prioritypatent/CN2048843U/zh
Publication of JPH0159842UpublicationCriticalpatent/JPH0159842U/ja
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Publication of JPH0431575Y2publicationCriticalpatent/JPH0431575Y2/ja
