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Priority to JP1976141712UpriorityCriticalpatent/JPS622613Y2/ja
Priority to DE2747128Aprioritypatent/DE2747128C3/de
Priority to US05/844,204prioritypatent/US4174902A/en
Publication of JPS5358548UpublicationCriticalpatent/JPS5358548U/ja
Application grantedgrantedCritical
Publication of JPS622613Y2publicationCriticalpatent/JPS622613Y2/ja