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 GB19412/61Aexternal-prioritypatent/GB940930A/en
Application filed by Lodge Cottrell LtdfiledCriticalLodge Cottrell Ltd
Publication of BE617594ApublicationCriticalpatent/BE617594A/en