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 to GB1360465ApriorityCriticalpatent/GB1056201A/en
Priority claimed from BE662129Aexternal-prioritypatent/BE662129A/fr
Priority to FR12341Aprioritypatent/FR1429164A/fr
Priority claimed from FR12341Aexternal-prioritypatent/FR1429164A/fr
Application filedfiledCritical
Priority to NL6504504Aprioritypatent/NL6504504A/xx
Priority to LU48368Aprioritypatent/LU48368A1/xx
Publication of NL6504504ApublicationCriticalpatent/NL6504504A/xx