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Priority to JP1977110410UpriorityCriticalpatent/JPS5818846Y2/ja
Priority to US05/931,528prioritypatent/US4242799A/en
Priority to GB7833679Aprioritypatent/GB2005613B/en
Publication of JPS5437393UpublicationCriticalpatent/JPS5437393U/ja
Application grantedgrantedCritical
Publication of JPS5818846Y2publicationCriticalpatent/JPS5818846Y2/ja