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Priority to JP16791980UpriorityCriticalpatent/JPS625709Y2/ja
Priority to US06/288,018prioritypatent/US4606238A/en
Publication of JPS5742427UpublicationCriticalpatent/JPS5742427U/ja
Application grantedgrantedCritical
Publication of JPS625709Y2publicationCriticalpatent/JPS625709Y2/ja