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Priority to JP1986138332UpriorityCriticalpatent/JPH0440953Y2/ja
Priority to KR878700630Uprioritypatent/KR890006813Y1/ko
Publication of JPS6343791UpublicationCriticalpatent/JPS6343791U/ja
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Publication of JPH0440953Y2publicationCriticalpatent/JPH0440953Y2/ja
