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Priority to JP5673476UpriorityCriticalpatent/JPS5741837Y2/ja
Priority to US05/762,559prioritypatent/US4111091A/en
Publication of JPS52147426UpublicationCriticalpatent/JPS52147426U/ja
Application grantedgrantedCritical
Publication of JPS5741837Y2publicationCriticalpatent/JPS5741837Y2/ja