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Priority to JP1990069924UpriorityCriticalpatent/JP2526800Y2/ja
Priority to US07/721,350prioritypatent/US5116231A/en
Publication of JPH0427155UpublicationCriticalpatent/JPH0427155U/ja
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Publication of JP2526800Y2publicationCriticalpatent/JP2526800Y2/ja
