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 NL646407778Aexternal-prioritypatent/NL139831B/xx
Application filedfiledCritical
Application grantedgrantedCritical
Publication of FR1449093ApublicationCriticalpatent/FR1449093A/fr