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Priority to JP1989061036UpriorityCriticalpatent/JP2501864Y2/ja
Priority to US07/528,889prioritypatent/US5070315A/en
Publication of JPH0324238UpublicationCriticalpatent/JPH0324238U/ja
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Publication of JP2501864Y2publicationCriticalpatent/JP2501864Y2/ja
