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Application filed by Silca SpafiledCriticalSilca Spa
Priority to ITVE910042ApriorityCriticalpatent/IT1253647B/it
Publication of ITVE910042A0publicationCriticalpatent/ITVE910042A0/it
Publication of ITVE910042A1publicationCriticalpatent/ITVE910042A1/it
Application grantedgrantedCritical
Publication of IT1253647BpublicationCriticalpatent/IT1253647B/it