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Priority to JP10944985UpriorityCriticalpatent/JPH0329717Y2/ja
Priority to CN 86104788prioritypatent/CN1014093B/zh
Publication of JPS6218628UpublicationCriticalpatent/JPS6218628U/ja
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Publication of JPH0329717Y2publicationCriticalpatent/JPH0329717Y2/ja