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Priority to JP17841784UpriorityCriticalpatent/JPS6193040U/ja
Priority to KR2019850010467Uprioritypatent/KR900002590Y1/ko
Priority to US06/799,017prioritypatent/US4757321A/en
Publication of JPS6193040UpublicationCriticalpatent/JPS6193040U/ja
