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Priority claimed from GB8619292Aexternal-prioritypatent/GB2179432B/en
Application filed by Secretary Environment BritfiledCriticalSecretary Environment Brit
Priority claimed from PCT/GB1987/000556external-prioritypatent/WO1988001051A1/en
Application grantedgrantedCritical
Publication of ATE64461T1publicationCriticalpatent/ATE64461T1/en