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Priority to JP1986115953UpriorityCriticalpatent/JPH0350466Y2/ja
Priority to KR1019870003445Aprioritypatent/KR910001034B1/ko
Priority to US07/036,746prioritypatent/US4742613A/en
Publication of JPS6323663UpublicationCriticalpatent/JPS6323663U/ja
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Publication of JPH0350466Y2publicationCriticalpatent/JPH0350466Y2/ja