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Priority to JP1926972ApriorityCriticalpatent/JPS5641979B2/ja
Priority to US00334898Aprioritypatent/US3825330A/en
Priority to DE2308874Aprioritypatent/DE2308874C3/de
Publication of JPS4889726ApublicationCriticalpatent/JPS4889726A/ja
Publication of JPS5641979B2publicationCriticalpatent/JPS5641979B2/ja