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
Priority to AU17692/83ApriorityCriticalpatent/AU1769283A/en
Application filed by Aubrey John Weston HarrisonfiledCriticalAubrey John Weston Harrison
Priority to ZA837628Aprioritypatent/ZA837628B/en
Publication of ZA837628BpublicationCriticalpatent/ZA837628B/en