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Priority to JP216473ApriorityCriticalpatent/JPS547073B2/ja
Priority to US430575Aprioritypatent/US3904448A/en
Priority to DE19742400286prioritypatent/DE2400286C3/de
Publication of JPS4989899ApublicationCriticalpatent/JPS4989899A/ja
Publication of JPS547073B2publicationCriticalpatent/JPS547073B2/ja