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Priority claimed from GB8526395Aexternal-prioritypatent/GB2182089B/en
Application filed by Lowe & Fletcher LtdfiledCriticalLowe & Fletcher Ltd
Priority claimed from EP86902877Aexternal-prioritypatent/EP0247062B1/de
Application grantedgrantedCritical
Publication of ATE48875T1publicationCriticalpatent/ATE48875T1/de