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Priority claimed from GB878707917Aexternal-prioritypatent/GB8707917D0/en
Application filed by Drg Uk LtdfiledCriticalDrg Uk Ltd
Priority claimed from EP19880302899external-prioritypatent/EP0285424B1/en
Application grantedgrantedCritical
Publication of ATE79249T1publicationCriticalpatent/ATE79249T1/en