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Priority claimed from GB848413558Aexternal-prioritypatent/GB8413558D0/en
Priority claimed from GB848425174Aexternal-prioritypatent/GB8425174D0/en
Application filed by Paul Malcolm TrenchardfiledCriticalPaul Malcolm Trenchard
Priority claimed from EP85902594Aexternal-prioritypatent/EP0185697B1/de
Application grantedgrantedCritical
Publication of ATE41607T1publicationCriticalpatent/ATE41607T1/de