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Priority to JP13330276UpriorityCriticalpatent/JPS5624316Y2/ja
Priority to US05/823,272prioritypatent/US4193385A/en
Publication of JPS5351521UpublicationCriticalpatent/JPS5351521U/ja
Application grantedgrantedCritical
Publication of JPS5624316Y2publicationCriticalpatent/JPS5624316Y2/ja