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Priority to JP46031049ApriorityCriticalpatent/JPS5247274B1/ja
Priority to FR7216576Aprioritypatent/FR2137687B1/fr
Priority to DE19722222939prioritypatent/DE2222939A1/de
Priority to GB2196172Aprioritypatent/GB1368871A/en
Publication of JPS5247274B1publicationCriticalpatent/JPS5247274B1/ja