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 Pierre A TixhonfiledCriticalPierre A Tixhon
Priority to BE619425ApriorityCriticalpatent/BE619425A/en
Publication of BE619425ApublicationCriticalpatent/BE619425A/en