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 Walter FarinafiledCriticalWalter Farina
Priority to BE576051ApriorityCriticalpatent/BE576051A/fr
Publication of BE576051ApublicationCriticalpatent/BE576051A/fr