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 CS3609ApriorityCriticalpatent/CS173251B1/cs
Priority to FR7515869Aprioritypatent/FR2272208A1/fr
Priority to JP50059816Aprioritypatent/JPS511756A/ja
Publication of CS173251B1publicationCriticalpatent/CS173251B1/cs