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Priority to JP16399779UpriorityCriticalpatent/JPS6238062Y2/ja
Priority to EP80304213Aprioritypatent/EP0029732B1/en
Priority to DE8080304213Tprioritypatent/DE3068068D1/de
Publication of JPS5679763UpublicationCriticalpatent/JPS5679763U/ja
Application grantedgrantedCritical
Publication of JPS6238062Y2publicationCriticalpatent/JPS6238062Y2/ja