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Priority to JP1987107895UpriorityCriticalpatent/JPH0424172Y2/ja
Priority to KR2019870022496Uprioritypatent/KR910001031Y1/ko
Publication of JPS6415813UpublicationCriticalpatent/JPS6415813U/ja
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Publication of JPH0424172Y2publicationCriticalpatent/JPH0424172Y2/ja