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Priority claimed from GB858501431Aexternal-prioritypatent/GB8501431D0/en
Application filed by Howden James & Co LtdfiledCriticalHowden James & Co Ltd
Priority claimed from EP85303180Aexternal-prioritypatent/EP0164878B1/en
Application grantedgrantedCritical
Publication of ATE60363T1publicationCriticalpatent/ATE60363T1/en