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Priority to JP1981011445UpriorityCriticalpatent/JPS6242560Y2/ja
Priority to KR2019810006898Uprioritypatent/KR880002250Y1/ko
Publication of JPS57125566UpublicationCriticalpatent/JPS57125566U/ja
Application grantedgrantedCritical
Publication of JPS6242560Y2publicationCriticalpatent/JPS6242560Y2/ja