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Priority to JP5233672ApriorityCriticalpatent/JPS497640A/ja
Priority to GB2119873Aprioritypatent/GB1413429A/en
Priority to DE19732325711prioritypatent/DE2325711A1/de
Priority to FR7318327Aprioritypatent/FR2186094A5/fr
Priority to IT2433673Aprioritypatent/IT987743B/it
Publication of JPS497640ApublicationCriticalpatent/JPS497640A/ja