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Priority to JP2880073ApriorityCriticalpatent/JPS54933B2/ja
Priority to US05/448,866prioritypatent/US3960108A/en
Priority to DE2411852Aprioritypatent/DE2411852B2/de
Publication of JPS49116138ApublicationCriticalpatent/JPS49116138A/ja
Publication of JPS54933B2publicationCriticalpatent/JPS54933B2/ja