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 GB1041676Aexternal-prioritypatent/GB1572091A/en
Application filed by Lowe & Fletcher LtdfiledCriticalLowe & Fletcher Ltd
Publication of HK68180ApublicationCriticalpatent/HK68180A/en