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Priority to JP7599873ApriorityCriticalpatent/JPS535783B2/ja
Priority to GB2001474Aprioritypatent/GB1435634A/en
Priority to DE2423521Aprioritypatent/DE2423521A1/de
Priority to NO741797Aprioritypatent/NO144331C/no
Publication of JPS5024027ApublicationCriticalpatent/JPS5024027A/ja
Publication of JPS535783B2publicationCriticalpatent/JPS535783B2/ja