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Priority to JP2928273ApriorityCriticalpatent/JPS49116479A/ja
Priority to GB636874Aprioritypatent/GB1448932A/en
Priority to DE19742407402prioritypatent/DE2407402A1/de
Priority to CA193,010Aprioritypatent/CA1059616A/en
Priority to US05/444,136prioritypatent/US3959819A/en
Publication of JPS49116479ApublicationCriticalpatent/JPS49116479A/ja