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Priority to JP45008578ApriorityCriticalpatent/JPS4921365B1/ja
Priority to US00109360Aprioritypatent/US3757468A/en
Priority to FI710257Aprioritypatent/FI51416C/fi
Priority to US00358323Aprioritypatent/US3834074A/en
Publication of JPS4921365B1publicationCriticalpatent/JPS4921365B1/ja