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Priority to JP3478573ApriorityCriticalpatent/JPS536867B2/ja
Priority to CA195,976Aprioritypatent/CA993572A/en
Priority to US454920Aprioritypatent/US3924064A/en
Publication of JPS49122781ApublicationCriticalpatent/JPS49122781A/ja
Publication of JPS536867B2publicationCriticalpatent/JPS536867B2/ja