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Priority to JP2997873ApriorityCriticalpatent/JPS561731B2/ja
Priority to GB727074Aprioritypatent/GB1428632A/en
Priority to US443619Aprioritypatent/US3889077A/en
Priority to FR7405579Aprioritypatent/FR2218562B1/fr
Publication of JPS49119677ApublicationCriticalpatent/JPS49119677A/ja
Publication of JPS561731B2publicationCriticalpatent/JPS561731B2/ja