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.)
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Publication date
Priority claimed from ZA90660Aexternal-prioritypatent/ZA90660B/en
Application filed by Electroduct CcfiledCriticalElectroduct Cc
Priority to ZA91320ApriorityCriticalpatent/ZA91320B/en
Publication of ZA91320BpublicationCriticalpatent/ZA91320B/en