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Priority to JP15410387UpriorityCriticalpatent/JPH0422390Y2/ja
Priority to CN 87107907prioritypatent/CN1014006B/zh
Publication of JPH0159291UpublicationCriticalpatent/JPH0159291U/ja
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Publication of JPH0422390Y2publicationCriticalpatent/JPH0422390Y2/ja
