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 Alan Rodney Woodcraft Brown, Oscar Morgan Evans WilburfiledCriticalAlan Rodney Woodcraft Brown
Priority to ZA90498ApriorityCriticalpatent/ZA90498B/en
Publication of ZA90498BpublicationCriticalpatent/ZA90498B/en