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Priority to JP8741172ApriorityCriticalpatent/JPS5040419B2/ja
Priority to US390208Aprioritypatent/US3904421A/en
Publication of JPS4942729ApublicationCriticalpatent/JPS4942729A/ja
Publication of JPS5040419B2publicationCriticalpatent/JPS5040419B2/ja
