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Priority claimed from JP53025975Aexternal-prioritypatent/JPS6052711B2/ja
Priority claimed from JP9312178Aexternal-prioritypatent/JPS5520711A/ja
Application filed by Asahi Chemical IndfiledCriticalAsahi Chemical Ind
Publication of IT7920874A0publicationCriticalpatent/IT7920874A0/it
Application grantedgrantedCritical
Publication of IT1166682BpublicationCriticalpatent/IT1166682B/it