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Priority to JP6645885UpriorityCriticalpatent/JPS61182882U/ja
Priority to KR2019850013443Uprioritypatent/KR920006259Y1/ko
Priority to GB08604978Aprioritypatent/GB2179768B/en
Publication of JPS61182882UpublicationCriticalpatent/JPS61182882U/ja