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 Philippus Albertus Van WykfiledCriticalPhilippus Albertus Van Wyk
Priority to ZA82695ApriorityCriticalpatent/ZA82695B/en
Publication of ZA82695BpublicationCriticalpatent/ZA82695B/en