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Priority to JP1717173ApriorityCriticalpatent/JPS566056B2/ja
Priority to DE19742406529prioritypatent/DE2406529C3/de
Publication of JPS49106806ApublicationCriticalpatent/JPS49106806A/ja
Priority to US05/612,332prioritypatent/US3979772A/en
Publication of JPS566056B2publicationCriticalpatent/JPS566056B2/ja