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Priority to JP4758673ApriorityCriticalpatent/JPS5521501B2/ja
Priority to US05/463,246prioritypatent/US3934178A/en
Priority to DE2420601Aprioritypatent/DE2420601A1/de
Publication of JPS49135570ApublicationCriticalpatent/JPS49135570A/ja
Publication of JPS5521501B2publicationCriticalpatent/JPS5521501B2/ja