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 A JacobszfiledCriticalA Jacobsz
Priority to ZA713874ApriorityCriticalpatent/ZA713874B/en
Priority to AU42710/72Aprioritypatent/AU466803B2/en
Priority to AR242543Aprioritypatent/AR195069A1/en
Publication of ZA713874BpublicationCriticalpatent/ZA713874B/en