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Priority to JP5169776UpriorityCriticalpatent/JPS52142413U/ja
Priority to US05/788,837prioritypatent/US4122770A/en
Priority to FR7711857Aprioritypatent/FR2348819A1/fr
Priority to DE19772718113prioritypatent/DE2718113A1/de
Publication of JPS52142413UpublicationCriticalpatent/JPS52142413U/ja