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Priority claimed from IT48229/87Aexternal-prioritypatent/IT1218154B/it
Priority claimed from IT8748624Aexternal-prioritypatent/IT1211922B/it
Application filed by Ar Ma SrlfiledCriticalAr Ma Srl
Priority claimed from EP88830315Aexternal-prioritypatent/EP0307367B1/de
Application grantedgrantedCritical
Publication of ATE77247T1publicationCriticalpatent/ATE77247T1/de