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 Bernard GoldringfiledCriticalBernard Goldring
Priority to ZA9701069ApriorityCriticalpatent/ZA971069B/en
Publication of ZA971069BpublicationCriticalpatent/ZA971069B/en