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Priority to JP1989094619UpriorityCriticalpatent/JP2509081Y2/ja
Priority to KR1019900012124Aprioritypatent/KR910005522A/ko
Priority to US07/565,296prioritypatent/US5044719A/en
Publication of JPH0377904UpublicationCriticalpatent/JPH0377904U/ja
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Publication of JP2509081Y2publicationCriticalpatent/JP2509081Y2/ja
