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 Gregfor LtdfiledCriticalGregfor Ltd
Priority to ZA00812628ApriorityCriticalpatent/ZA812628B/en
Publication of ZA812628BpublicationCriticalpatent/ZA812628B/en