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 Linde C V DfiledCriticalLinde C V D
Priority to ZA718117ApriorityCriticalpatent/ZA718117B/en
Publication of ZA718117BpublicationCriticalpatent/ZA718117B/en