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Priority to JP8509280UpriorityCriticalpatent/JPS6110783Y2/ja
Priority to US06/180,415prioritypatent/US4381727A/en
Priority to DE3031750Aprioritypatent/DE3031750C2/de
Publication of JPS579797UpublicationCriticalpatent/JPS579797U/ja
Application grantedgrantedCritical
Publication of JPS6110783Y2publicationCriticalpatent/JPS6110783Y2/ja