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Priority to JP1989092720UpriorityCriticalpatent/JP2538929Y2/ja
Priority to US07/545,826prioritypatent/US5090171A/en
Priority to KR1019900009863Aprioritypatent/KR960014376B1/ko
Publication of JPH0331677UpublicationCriticalpatent/JPH0331677U/ja
Application grantedgrantedCritical
Publication of JP2538929Y2publicationCriticalpatent/JP2538929Y2/ja
