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 A KothmannfiledCriticalA Kothmann
Priority to ZA733559ApriorityCriticalpatent/ZA733559B/en
Publication of ZA733559BpublicationCriticalpatent/ZA733559B/en