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 Cementation Engineering LtdfiledCriticalCementation Engineering Ltd
Priority to ZA00807128ApriorityCriticalpatent/ZA807128B/en
Publication of ZA807128BpublicationCriticalpatent/ZA807128B/en