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Priority to JP268773ApriorityCriticalpatent/JPS5240319B2/ja
Priority to US00349471Aprioritypatent/US3825058A/en
Priority to DE2318850Aprioritypatent/DE2318850C3/de
Publication of JPS4988767ApublicationCriticalpatent/JPS4988767A/ja
Publication of JPS5240319B2publicationCriticalpatent/JPS5240319B2/ja