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Priority to JP1987026208UpriorityCriticalpatent/JPH0530124Y2/ja
Priority to US07/158,970prioritypatent/US4903398A/en
Publication of JPS63135139UpublicationCriticalpatent/JPS63135139U/ja
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Publication of JPH0530124Y2publicationCriticalpatent/JPH0530124Y2/ja