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Priority claimed from GB868611370Aexternal-prioritypatent/GB8611370D0/en
Priority claimed from GB868629878Aexternal-prioritypatent/GB8629878D0/en
Application filed by Levene Ltd WilliamfiledCriticalLevene Ltd William
Priority claimed from EP87304030Aexternal-prioritypatent/EP0246023B1/de
Application grantedgrantedCritical
Publication of ATE50967T1publicationCriticalpatent/ATE50967T1/de