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Priority claimed from GB888802082Aexternal-prioritypatent/GB8802082D0/en
Priority claimed from GB888802083Aexternal-prioritypatent/GB8802083D0/en
Priority claimed from GB888818229Aexternal-prioritypatent/GB8818229D0/en
Priority claimed from GB888818186Aexternal-prioritypatent/GB8818186D0/en
Application filed by Foseco IntfiledCriticalFoseco Int
Priority claimed from EP89300556Aexternal-prioritypatent/EP0327226B2/en
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Publication of ATE66170T1publicationCriticalpatent/ATE66170T1/en