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Priority to JP1975174124UpriorityCriticalpatent/JPS5738717Y2/ja
Priority to US05/714,267prioritypatent/US4084473A/en
Publication of JPS5285420UpublicationCriticalpatent/JPS5285420U/ja
Application grantedgrantedCritical
Publication of JPS5738717Y2publicationCriticalpatent/JPS5738717Y2/ja