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Priority to JP2308572ApriorityCriticalpatent/JPS5423539B2/ja
Priority to US00281660Aprioritypatent/US3801966A/en
Publication of JPS4891940ApublicationCriticalpatent/JPS4891940A/ja
Publication of JPS5423539B2publicationCriticalpatent/JPS5423539B2/ja