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 filedfiledCritical
Priority to BE661008ApriorityCriticalpatent/BE661008A/xx
Publication of BE661008ApublicationCriticalpatent/BE661008A/xx
Priority to FR51624Aprioritypatent/FR1470486A/fr
Priority to ES0324091Aprioritypatent/ES324091A1/es