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Priority to JP2581673ApriorityCriticalpatent/JPS5248823B2/ja
Priority to US05/445,337prioritypatent/US3942889A/en
Priority to DE2410125Aprioritypatent/DE2410125A1/de
Publication of JPS49115341ApublicationCriticalpatent/JPS49115341A/ja
Publication of JPS5248823B2publicationCriticalpatent/JPS5248823B2/ja