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 filed by Frantisek Novotny, Pavel LibalfiledCriticalFrantisek Novotny
Priority to CS90903ApriorityCriticalpatent/CS90390A2/en
Publication of CS90390A2publicationCriticalpatent/CS90390A2/en