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 Shell South African LtdfiledCriticalShell South African Ltd
Priority to ZA00776969ApriorityCriticalpatent/ZA776969B/en
Publication of ZA776969BpublicationCriticalpatent/ZA776969B/en