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Priority claimed from GB888820296Aexternal-prioritypatent/GB8820296D0/en
Priority claimed from GB898908448Aexternal-prioritypatent/GB8908448D0/en
Application filed by Davy Mckee LtdfiledCriticalDavy Mckee Ltd
Priority claimed from PCT/GB1989/000986external-prioritypatent/WO1990002003A1/en
Application grantedgrantedCritical
Publication of ATE88116T1publicationCriticalpatent/ATE88116T1/en