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Priority to JP13906389UpriorityCriticalpatent/JP2553701Y2/ja
Priority to US07/574,284prioritypatent/US5111230A/en
Publication of JPH0377925UpublicationCriticalpatent/JPH0377925U/ja
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Publication of JP2553701Y2publicationCriticalpatent/JP2553701Y2/ja