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Priority to JP17068982UpriorityCriticalpatent/JPS5973281U/ja
Priority to US06/532,220prioritypatent/US4549352A/en
Priority to GB08324830Aprioritypatent/GB2129732B/en
Priority to DE19833333919prioritypatent/DE3333919A1/de
Publication of JPS5973281UpublicationCriticalpatent/JPS5973281U/ja
Application grantedgrantedCritical
Publication of JPS6215020Y2publicationCriticalpatent/JPS6215020Y2/ja