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Priority to JP12939675UpriorityCriticalpatent/JPS5519318Y2/ja
Priority to US05/719,269prioritypatent/US4057135A/en
Publication of JPS5242948UpublicationCriticalpatent/JPS5242948U/ja
Application grantedgrantedCritical
Publication of JPS5519318Y2publicationCriticalpatent/JPS5519318Y2/ja