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 DD16047472ApriorityCriticalpatent/DD98064A1/xx
Priority to FR7301640Aprioritypatent/FR2175402A5/fr
Priority to CS54173Aprioritypatent/CS195376B1/cs
Publication of DD98064A1publicationCriticalpatent/DD98064A1/xx