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Priority to JP10644886UpriorityCriticalpatent/JPH0238737Y2/ja
Priority to US07/069,035prioritypatent/US4796605A/en
Priority to KR1019870007376Aprioritypatent/KR940008966B1/ko
Publication of JPS6313129UpublicationCriticalpatent/JPS6313129U/ja
Application grantedgrantedCritical
Publication of JPH0238737Y2publicationCriticalpatent/JPH0238737Y2/ja