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 J AckermanfiledCriticalJ Ackerman
Priority to ZA708514ApriorityCriticalpatent/ZA708514B/en
Publication of ZA708514BpublicationCriticalpatent/ZA708514B/en