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Priority to JP5160174ApriorityCriticalpatent/JPS573208B2/ja
Priority to GB2950574Aprioritypatent/GB1465967A/en
Priority to FR7425116Aprioritypatent/FR2238231B1/fr
Publication of JPS50143064ApublicationCriticalpatent/JPS50143064A/ja
Publication of JPS573208B2publicationCriticalpatent/JPS573208B2/ja