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Priority to JP6487579UpriorityCriticalpatent/JPS5848660Y2/ja
Priority to US06/148,814prioritypatent/US4330179A/en
Priority to GB8015790Aprioritypatent/GB2054190B/en
Priority to DE19803018881prioritypatent/DE3018881A1/de
Publication of JPS55167233UpublicationCriticalpatent/JPS55167233U/ja
Application grantedgrantedCritical
Publication of JPS5848660Y2publicationCriticalpatent/JPS5848660Y2/ja