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Priority claimed from IT4919279Aexternal-prioritypatent/IT1116192B/it
Priority claimed from IT49407/79Aexternal-prioritypatent/IT1117367B/it
Application filed by Arnaldo SpenafiledCriticalArnaldo Spena
Priority claimed from EP80830030Aexternal-prioritypatent/EP0020310B1/de
Application grantedgrantedCritical
Publication of ATE3683T1publicationCriticalpatent/ATE3683T1/de