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Priority claimed from GB858520218Aexternal-prioritypatent/GB8520218D0/en
Priority claimed from GB868603655Aexternal-prioritypatent/GB8603655D0/en
Application filed by Allied Colloids LtdfiledCriticalAllied Colloids Ltd
Priority claimed from EP86306079Aexternal-prioritypatent/EP0214760B1/de
Application grantedgrantedCritical
Publication of ATE53605T1publicationCriticalpatent/ATE53605T1/de