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
Priority claimed from FR812210Aexternal-prioritypatent/FR1251305A/fr
Priority claimed from FR823638Aexternal-prioritypatent/FR77490E/fr
Application filed by Julien Henri Prudent ArnouxfiledCriticalJulien Henri Prudent Arnoux
Publication of BE597338ApublicationCriticalpatent/BE597338A/fr