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Priority to JP2709172ApriorityCriticalpatent/JPS53404B2/ja
Priority to CA166,937Aprioritypatent/CA1020415A/en
Priority to GB1266273Aprioritypatent/GB1420172A/en
Priority to FR7309406Aprioritypatent/FR2176133B1/fr
Publication of JPS4894717ApublicationCriticalpatent/JPS4894717A/ja
Publication of JPS53404B2publicationCriticalpatent/JPS53404B2/ja