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Priority to JP1986134859UpriorityCriticalpatent/JPH0451400Y2/ja
Priority to KR2019870007695Uprioritypatent/KR900003296Y1/ko
Publication of JPS6341830UpublicationCriticalpatent/JPS6341830U/ja
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Publication of JPH0451400Y2publicationCriticalpatent/JPH0451400Y2/ja