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Priority claimed from IT67417/80Aexternal-prioritypatent/IT1128055B/it
Priority claimed from IT67134/81Aexternal-prioritypatent/IT1143343B/it
Application filed by Olivetti & Co SpafiledCriticalOlivetti & Co Spa
Priority claimed from EP81301102Aexternal-prioritypatent/EP0036739B1/de
Application grantedgrantedCritical
Publication of ATE17209T1publicationCriticalpatent/ATE17209T1/de