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
Application filed by G & J Weir LtdfiledCriticalG & J Weir Ltd
Priority to BE588823ApriorityCriticalpatent/BE588823A/fr
Publication of BE588823ApublicationCriticalpatent/BE588823A/fr