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Priority to JP44000720ApriorityCriticalpatent/JPS5147757B1/ja
Priority to DE19691949060prioritypatent/DE1949060A1/de
Priority to GB4796569Aprioritypatent/GB1288401A/en
Priority to FR6933415Aprioritypatent/FR2019254A1/fr
Publication of JPS5147757B1publicationCriticalpatent/JPS5147757B1/ja