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Priority to JP1987166397UpriorityCriticalpatent/JPH0512315Y2/ja
Priority to KR2019880015013Uprioritypatent/KR910006222Y1/ko
Publication of JPH0170884UpublicationCriticalpatent/JPH0170884U/ja
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Publication of JPH0512315Y2publicationCriticalpatent/JPH0512315Y2/ja