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Priority to JP7269671ApriorityCriticalpatent/JPS4840580A/ja
Priority to US00275693Aprioritypatent/US3805380A/en
Priority to DE2244319Aprioritypatent/DE2244319A1/de
Priority to NL7212341Aprioritypatent/NL7212341A/xx
Publication of JPS4840580ApublicationCriticalpatent/JPS4840580A/ja