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Priority to JP1981006427UpriorityCriticalpatent/JPH0122196Y2/ja
Publication of JPS57119430UpublicationCriticalpatent/JPS57119430U/ja
Priority to KR2019820000409Uprioritypatent/KR880004233Y1/ko
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Publication of JPH0122196Y2publicationCriticalpatent/JPH0122196Y2/ja