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Priority to JP9335286UpriorityCriticalpatent/JPH0728625Y2/ja
Priority to US07/054,398prioritypatent/US4839757A/en
Priority to KR1019870005237Aprioritypatent/KR920004585B1/ko
Publication of JPS632266UpublicationCriticalpatent/JPS632266U/ja
Application grantedgrantedCritical
Publication of JPH0728625Y2publicationCriticalpatent/JPH0728625Y2/ja