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Priority to JP1986187593UpriorityCriticalpatent/JPH052610Y2/ja
Priority to KR1019880006732Aprioritypatent/KR910000981B1/ko
Publication of JPS6394973UpublicationCriticalpatent/JPS6394973U/ja
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Publication of JPH052610Y2publicationCriticalpatent/JPH052610Y2/ja