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Priority to JP14669887UpriorityCriticalpatent/JPS6452700U/ja
Priority to GB8822281Aprioritypatent/GB2210314B/en
Priority to US07/248,810prioritypatent/US4913015A/en
Priority to KR1019880012449Aprioritypatent/KR890004837A/ko
Publication of JPS6452700UpublicationCriticalpatent/JPS6452700U/ja