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Priority to JP12479870UpriorityCriticalpatent/JPS4931060Y1/ja
Priority to DE19712160675prioritypatent/DE2160675C3/de
Priority to FR7144184Aprioritypatent/FR2117965B1/fr
Priority to CH1814171Aprioritypatent/CH531642A/de
Priority to IT3239771Aprioritypatent/IT943964B/it
Publication of JPS4931060Y1publicationCriticalpatent/JPS4931060Y1/ja