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Application filedfiledCritical
Priority to JP15711787UpriorityCriticalpatent/JPH0726118Y2/ja
Priority to EP88116866Aprioritypatent/EP0311980A3/en
Priority to US07/256,762prioritypatent/US4953994A/en
Priority to KR1019880013380Aprioritypatent/KR910004030B1/ko
Publication of JPH0162058UpublicationCriticalpatent/JPH0162058U/ja
Priority to US07/552,405prioritypatent/US5062722A/en
Application grantedgrantedCritical
Publication of JPH0726118Y2publicationCriticalpatent/JPH0726118Y2/ja