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Priority to JP848368ApriorityCriticalpatent/JPS5016645B1/ja
Priority to FR1577537Dprioritypatent/FR1577537A/fr
Priority to DE19681772744prioritypatent/DE1772744C3/de
Priority to NL6809278Aprioritypatent/NL150934B/xx
Publication of JPS5016645B1publicationCriticalpatent/JPS5016645B1/ja