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 CS65675ApriorityCriticalpatent/CS175877B1/cs
Priority to SU762319206Aprioritypatent/SU604553A1/ru
Publication of CS175877B1publicationCriticalpatent/CS175877B1/cs
