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Priority to JP15218586UpriorityCriticalpatent/JPH0348180Y2/ja
Priority to US07/061,125prioritypatent/US4832918A/en
Publication of JPS6360436UpublicationCriticalpatent/JPS6360436U/ja
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Publication of JPH0348180Y2publicationCriticalpatent/JPH0348180Y2/ja