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Priority to JP4152072ApriorityCriticalpatent/JPS565977B2/ja
Priority to US352462Aprioritypatent/US3896263A/en
Priority to DE19732320145prioritypatent/DE2320145C3/de
Publication of JPS494519ApublicationCriticalpatent/JPS494519A/ja
Publication of JPS565977B2publicationCriticalpatent/JPS565977B2/ja