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Priority to JP812273ApriorityCriticalpatent/JPS5439974B2/ja
Priority to US05/430,568prioritypatent/US3956744A/en
Priority to DE2400548Aprioritypatent/DE2400548C3/de
Publication of JPS4997531ApublicationCriticalpatent/JPS4997531A/ja
Publication of JPS5439974B2publicationCriticalpatent/JPS5439974B2/ja