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Priority claimed from IT8841640Aexternal-prioritypatent/IT1225229B/en
Priority claimed from IT8841704Aexternal-prioritypatent/IT1225881B/en
Application filed by V T N Benne S R LfiledCriticalV T N Benne S R L
Priority claimed from EP19890111607external-prioritypatent/EP0353454B1/en
Application grantedgrantedCritical
Publication of ATE89359T1publicationCriticalpatent/ATE89359T1/en