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 Otto Dohmeier HansfiledCriticalOtto Dohmeier Hans
Priority to ZA90581ApriorityCriticalpatent/ZA90581B/en
Publication of ZA90581BpublicationCriticalpatent/ZA90581B/en