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Priority to JP6539373UpriorityCriticalpatent/JPS5243517Y2/ja
Priority to GB2314274Aprioritypatent/GB1419050A/en
Priority to DE19742426064prioritypatent/DE2426064C3/de
Publication of JPS5014687UpublicationCriticalpatent/JPS5014687U/ja
Application grantedgrantedCritical
Publication of JPS5243517Y2publicationCriticalpatent/JPS5243517Y2/ja