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Priority to JP15400679UpriorityCriticalpatent/JPS5644449Y2/ja
Priority to JP1979154004Uprioritypatent/JPS5712947Y2/ja
Priority to US06/105,929prioritypatent/US4286344A/en
Publication of JPS5670864UpublicationCriticalpatent/JPS5670864U/ja
Application grantedgrantedCritical
Publication of JPS5644449Y2publicationCriticalpatent/JPS5644449Y2/ja