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 DE1965D0048013priorityCriticalpatent/DE1257796B/de
Priority to FR28881Aprioritypatent/FR1457486A/fr
Priority to NL6510893Aprioritypatent/NL6510893A/xx
Publication of NL6510893ApublicationCriticalpatent/NL6510893A/xx
