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Priority to JP1987000516UpriorityCriticalpatent/JPH0412849Y2/ja
Priority to KR2019870021312Uprioritypatent/KR900007774Y1/ko
Priority to US07/137,297prioritypatent/US4821623A/en
Publication of JPS63108853UpublicationCriticalpatent/JPS63108853U/ja
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Publication of JPH0412849Y2publicationCriticalpatent/JPH0412849Y2/ja