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Priority to JP281272ApriorityCriticalpatent/JPS4871621A/ja
Priority to GB5878572Aprioritypatent/GB1416727A/en
Priority to DE2263070Aprioritypatent/DE2263070C3/de
Priority to US00318710Aprioritypatent/US3843964A/en
Priority to FR7246345Aprioritypatent/FR2167117A5/fr
Publication of JPS4871621ApublicationCriticalpatent/JPS4871621A/ja