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Priority to JP1990078341UpriorityCriticalpatent/JP2529121Y2/ja
Priority to US07/731,991prioritypatent/US5175952A/en
Priority to KR1019910012452Aprioritypatent/KR920002019A/ko
Publication of JPH0435766UpublicationCriticalpatent/JPH0435766U/ja
Application grantedgrantedCritical
Publication of JP2529121Y2publicationCriticalpatent/JP2529121Y2/ja
