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Priority to JP5684572ApriorityCriticalpatent/JPS4918057A/ja
Priority to US00278390Aprioritypatent/US3821898A/en
Priority to CH1216672Aprioritypatent/CH550996A/xx
Priority to DE2240028Aprioritypatent/DE2240028C3/de
Publication of JPS4918057ApublicationCriticalpatent/JPS4918057A/ja