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Priority to JP1976071903UpriorityCriticalpatent/JPS5724847Y2/ja
Priority to US05/802,582prioritypatent/US4119899A/en
Publication of JPS52162620UpublicationCriticalpatent/JPS52162620U/ja
Application grantedgrantedCritical
Publication of JPS5724847Y2publicationCriticalpatent/JPS5724847Y2/ja