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Priority to JP1975078778UpriorityCriticalpatent/JPS5527907Y2/ja
Priority to US05/694,488prioritypatent/US4040193A/en
Publication of JPS51158782UpublicationCriticalpatent/JPS51158782U/ja
Application grantedgrantedCritical
Publication of JPS5527907Y2publicationCriticalpatent/JPS5527907Y2/ja