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Priority claimed from GB8810894Aexternal-prioritypatent/GB2218486B/en
Application filed by British Gas PlcfiledCriticalBritish Gas Plc
Publication of FI940586ApublicationCriticalpatent/FI940586A/en
Publication of FI940586A0publicationCriticalpatent/FI940586A0/en
Application grantedgrantedCritical
Publication of FI105017BpublicationCriticalpatent/FI105017B/en