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Priority to JP3775979UpriorityCriticalpatent/JPS6236089Y2/ja
Priority to GB8008829Aprioritypatent/GB2049189B/en
Priority to DE3010241Aprioritypatent/DE3010241A1/de
Publication of JPS55137312UpublicationCriticalpatent/JPS55137312U/ja
Priority to US06/405,275prioritypatent/US4727310A/en
Application grantedgrantedCritical
Publication of JPS6236089Y2publicationCriticalpatent/JPS6236089Y2/ja