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 DD16140772ApriorityCriticalpatent/DD99485A1/xx
Priority to CS161273Aprioritypatent/CS184405B1/cs
Priority to SU7301893671Aprioritypatent/SU582547A1/ru
Publication of DD99485A1publicationCriticalpatent/DD99485A1/xx