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Priority to JP9493080UpriorityCriticalpatent/JPS6114680Y2/ja
Priority to GB8120608Aprioritypatent/GB2084289B/en
Publication of JPS5719248UpublicationCriticalpatent/JPS5719248U/ja
Priority to US06/535,532prioritypatent/US4476967A/en
Application grantedgrantedCritical
Publication of JPS6114680Y2publicationCriticalpatent/JPS6114680Y2/ja