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Priority to JP1979071324UpriorityCriticalpatent/JPS6137867Y2/ja
Priority to EP19800300237prioritypatent/EP0014101B1/en
Priority to DE8080300237Tprioritypatent/DE3062487D1/de
Publication of JPS55171728UpublicationCriticalpatent/JPS55171728U/ja
Application grantedgrantedCritical
Publication of JPS6137867Y2publicationCriticalpatent/JPS6137867Y2/ja