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Priority to JP5597276UpriorityCriticalpatent/JPS5345175Y2/ja
Priority to US05/792,014prioritypatent/US4114339A/en
Publication of JPS52146678UpublicationCriticalpatent/JPS52146678U/ja
Application grantedgrantedCritical
Publication of JPS5345175Y2publicationCriticalpatent/JPS5345175Y2/ja