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Priority claimed from GB878713569Aexternal-prioritypatent/GB8713569D0/en
Priority claimed from GB878728489Aexternal-prioritypatent/GB8728489D0/en
Application filed by Foseco IntfiledCriticalFoseco Int
Priority claimed from EP88304783Aexternal-prioritypatent/EP0294970B1/de
Application grantedgrantedCritical
Publication of ATE68382T1publicationCriticalpatent/ATE68382T1/de