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 CS820972ApriorityCriticalpatent/CS156846B1/cs
Priority to DD17475373Aprioritypatent/DD107565A5/xx
Publication of CS156846B1publicationCriticalpatent/CS156846B1/cs