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Priority claimed from IT22883/87Aexternal-prioritypatent/IT1223403B/it
Priority claimed from IT8819509Aexternal-prioritypatent/IT1215944B/it
Application filed by Eniricerche SpafiledCriticalEniricerche Spa
Priority claimed from EP88202480Aexternal-prioritypatent/EP0319059B1/de
Application grantedgrantedCritical
Publication of ATE71404T1publicationCriticalpatent/ATE71404T1/de