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Priority to JP2416472ApriorityCriticalpatent/JPS5139271B2/ja
Priority to GB1017973Aprioritypatent/GB1405983A/en
Publication of JPS4891147ApublicationCriticalpatent/JPS4891147A/ja
Publication of JPS5139271B2publicationCriticalpatent/JPS5139271B2/ja