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Priority to JP12480785UpriorityCriticalpatent/JPS6232716U/ja
Priority to DE3618574Aprioritypatent/DE3618574C2/de
Priority to US06/871,117prioritypatent/US4699549A/en
Priority to KR2019860008466Uprioritypatent/KR920007765Y1/ko
Publication of JPS6232716UpublicationCriticalpatent/JPS6232716U/ja
