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Priority claimed from GB848413565Aexternal-prioritypatent/GB8413565D0/en
Priority claimed from GB848416583Aexternal-prioritypatent/GB8416583D0/en
Application filed by Gough & Co LtdfiledCriticalGough & Co Ltd
Priority claimed from EP85303749Aexternal-prioritypatent/EP0163519B1/en
Application grantedgrantedCritical
Publication of ATE31908T1publicationCriticalpatent/ATE31908T1/en