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
Priority claimed from ZA884700Aexternal-prioritypatent/ZA884700B/en
Application filed by Gilbert Shereston Barry, Dolan DavidfiledCriticalGilbert Shereston Barry
Priority to ZA887346ApriorityCriticalpatent/ZA887346B/en
Publication of ZA887346BpublicationCriticalpatent/ZA887346B/en