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 John Trevor RicefiledCriticalJohn Trevor Rice
Priority to ZA83310ApriorityCriticalpatent/ZA83310B/en
Publication of ZA83310BpublicationCriticalpatent/ZA83310B/en