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 Eugene LhoestfiledCriticalEugene Lhoest
Priority to BE580794ApriorityCriticalpatent/BE580794A/fr
Publication of BE580794ApublicationCriticalpatent/BE580794A/fr