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Priority to JP3279488UpriorityCriticalpatent/JPH0643856Y2/ja
Priority to CN 88221304prioritypatent/CN2045140U/zh
Priority to CN 88108708prioritypatent/CN1036475A/zh
Publication of JPH01138223UpublicationCriticalpatent/JPH01138223U/ja
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Publication of JPH0643856Y2publicationCriticalpatent/JPH0643856Y2/ja