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Priority to JP11288880UpriorityCriticalpatent/JPS625438Y2/ja
Priority to US06/272,047prioritypatent/US4425819A/en
Priority to DE8181302765Tprioritypatent/DE3174502D1/de
Priority to EP81302765Aprioritypatent/EP0043213B1/en
Publication of JPS5735190UpublicationCriticalpatent/JPS5735190U/ja
Application grantedgrantedCritical
Publication of JPS625438Y2publicationCriticalpatent/JPS625438Y2/ja