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 Jacques FournyfiledCriticalJacques Fourny
Priority to BE576441ApriorityCriticalpatent/BE576441A/en
Publication of BE576441ApublicationCriticalpatent/BE576441A/en