Legal status (The legal status 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 status listed.)
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 FR39325Aexternal-prioritypatent/FR1231849A/fr
Application filedfiledCritical
Priority to FR39718ApriorityCriticalpatent/FR76270E/fr
Priority to GB4657161Aprioritypatent/GB925668A/en
Application grantedgrantedCritical
Publication of FR76270EpublicationCriticalpatent/FR76270E/fr