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Priority claimed from GB848429121Aexternal-prioritypatent/GB8429121D0/en
Priority claimed from GB858508619Aexternal-prioritypatent/GB8508619D0/en
Application filed by Laporte Industries LtdfiledCriticalLaporte Industries Ltd
Priority claimed from EP85113947Aexternal-prioritypatent/EP0182170B1/de
Application grantedgrantedCritical
Publication of ATE50553T1publicationCriticalpatent/ATE50553T1/de