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 Albert De MetsfiledCriticalAlbert De Mets
Priority to BE594220ApriorityCriticalpatent/BE594220A/en
Publication of BE594220ApublicationCriticalpatent/BE594220A/en