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 Cornelius Franciscus De BruynfiledCriticalCornelius Franciscus De Bruyn
Priority to BE613809ApriorityCriticalpatent/BE613809A/nl
Publication of BE613809ApublicationCriticalpatent/BE613809A/nl