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Application filed by 日本国有鉄道filedCritical日本国有鉄道
Priority to JP1978101892UpriorityCriticalpatent/JPS5839227Y2/ja
Publication of JPS5519479UpublicationCriticalpatent/JPS5519479U/ja
Application grantedgrantedCritical
Publication of JPS5839227Y2publicationCriticalpatent/JPS5839227Y2/ja