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Priority to JP3772876ApriorityCriticalpatent/JPS52120955A/ja
Priority to US05/678,933prioritypatent/US4083220A/en
Priority to DE2617289Aprioritypatent/DE2617289C3/de
Publication of JPS52120955ApublicationCriticalpatent/JPS52120955A/ja
Publication of JPS5435990B2publicationCriticalpatent/JPS5435990B2/ja