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 Eugene HowatfiledCriticalEugene Howat
Priority to ZA826246ApriorityCriticalpatent/ZA826246B/en
Publication of ZA826246BpublicationCriticalpatent/ZA826246B/en