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Priority to JP10950673ApriorityCriticalpatent/JPS549725B2/ja
Priority to DE19742409544prioritypatent/DE2409544A1/de
Priority to IT2077074Aprioritypatent/IT1012553B/it
Publication of JPS5059810ApublicationCriticalpatent/JPS5059810A/ja
Publication of JPS549725B2publicationCriticalpatent/JPS549725B2/ja