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Priority to JP11118687UpriorityCriticalpatent/JPH055861Y2/ja
Priority to KR1019880003226Aprioritypatent/KR900006858B1/ko
Publication of JPS6417139UpublicationCriticalpatent/JPS6417139U/ja
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Publication of JPH055861Y2publicationCriticalpatent/JPH055861Y2/ja
