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 Guillaume DerkennefiledCriticalGuillaume Derkenne
Priority to BE577976ApriorityCriticalpatent/BE577976A/en
Publication of BE577976ApublicationCriticalpatent/BE577976A/en