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Priority to JP1988046694UpriorityCriticalpatent/JPH082818Y2/ja
Priority to US07/319,517prioritypatent/US5006941A/en
Priority to KR1019890003346Aprioritypatent/KR920002605B1/ko
Publication of JPH01151432UpublicationCriticalpatent/JPH01151432U/ja
Application grantedgrantedCritical
Publication of JPH082818Y2publicationCriticalpatent/JPH082818Y2/ja