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Priority claimed from GB838305145Aexternal-prioritypatent/GB8305145D0/en
Priority claimed from GB838305146Aexternal-prioritypatent/GB8305146D0/en
Application filed by Cookson Laminox LtdfiledCriticalCookson Laminox Ltd
Priority claimed from EP87102820Aexternal-prioritypatent/EP0307486B1/de
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Publication of ATE82231T1publicationCriticalpatent/ATE82231T1/de