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Priority to JP8820769ApriorityCriticalpatent/JPS5020879B1/ja
Priority to DK534370Aprioritypatent/DK126882B/da
Priority to FR7038808Aprioritypatent/FR2066973B3/fr
Priority to NL7016040Aprioritypatent/NL7016040A/xx
Priority to DE19702053942prioritypatent/DE2053942A1/de
Publication of JPS5020879B1publicationCriticalpatent/JPS5020879B1/ja