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Priority claimed from IT47777/87Aexternal-prioritypatent/IT1205771B/it
Priority claimed from IT47734/88Aexternal-prioritypatent/IT1219868B/it
Application filed by Sviluppo Materiali Spa, Ilva SpafiledCriticalSviluppo Materiali Spa
Priority claimed from EP88830119Aexternal-prioritypatent/EP0285578B1/de
Application grantedgrantedCritical
Publication of ATE93967T1publicationCriticalpatent/ATE93967T1/de