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Priority to JP8303672ApriorityCriticalpatent/JPS5347704B2/ja
Priority to US388763Aprioritypatent/US3910687A/en
Priority to DE19732341745prioritypatent/DE2341745C3/de
Publication of JPS4940543ApublicationCriticalpatent/JPS4940543A/ja
Publication of JPS5347704B2publicationCriticalpatent/JPS5347704B2/ja
