Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB9204150Aexternal-prioritypatent/GB2264765B/en
Application filed by British Gas PlcfiledCriticalBritish Gas Plc
Priority to HK98107285ApriorityCriticalpatent/HK1008073A1/en
Publication of HK1008073A1publicationCriticalpatent/HK1008073A1/en