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Priority to JP1975130345UpriorityCriticalpatent/JPS5719741Y2/ja
Priority to US05/694,488prioritypatent/US4040193A/en
Publication of JPS5243876UpublicationCriticalpatent/JPS5243876U/ja
Application grantedgrantedCritical
Publication of JPS5719741Y2publicationCriticalpatent/JPS5719741Y2/ja