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Priority to JP1977110593UpriorityCriticalpatent/JPS5747171Y2/ja
Priority to GB7826911Aprioritypatent/GB2000111B/en
Priority to US05/915,965prioritypatent/US4227644A/en
Priority to DE2826566Aprioritypatent/DE2826566C2/de
Publication of JPS5439110UpublicationCriticalpatent/JPS5439110U/ja
Application grantedgrantedCritical
Publication of JPS5747171Y2publicationCriticalpatent/JPS5747171Y2/ja