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 Nat Inst MetallurgfiledCriticalNat Inst Metallurg
Priority to ZA815009ApriorityCriticalpatent/ZA815009B/en
Publication of ZA815009BpublicationCriticalpatent/ZA815009B/en