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 Jean-Nicolas Bingen, Paul SonnemansfiledCriticalJean-Nicolas Bingen
Priority to BE610855ApriorityCriticalpatent/BE610855A/fr
Publication of BE610855ApublicationCriticalpatent/BE610855A/fr