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Priority to JP1987149659UpriorityCriticalpatent/JPH0440638Y2/ja
Priority to KR2019880015822Uprioritypatent/KR910009291Y1/ko
Publication of JPS6455894UpublicationCriticalpatent/JPS6455894U/ja
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Publication of JPH0440638Y2publicationCriticalpatent/JPH0440638Y2/ja