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 B ScruttonfiledCriticalB Scrutton
Priority to ZA00751271ApriorityCriticalpatent/ZA751271B/en
Publication of ZA751271BpublicationCriticalpatent/ZA751271B/en