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Priority claimed from GB868629825Aexternal-prioritypatent/GB8629825D0/en
Priority claimed from GB878707869Aexternal-prioritypatent/GB8707869D0/en
Application filed by Downs Jersey LtdfiledCriticalDowns Jersey Ltd
Priority claimed from EP87310957Aexternal-prioritypatent/EP0274246B1/en
Application grantedgrantedCritical
Publication of ATE87092T1publicationCriticalpatent/ATE87092T1/en