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
Priority to DD256994DpriorityCriticalpatent/DD256994A/xx
Application filed by Sojka JirifiledCriticalSojka Jiri
Priority to CS824342Aprioritypatent/CS246452B1/en
Publication of CS434282A1publicationCriticalpatent/CS434282A1/en
Priority to BG7186185Aprioritypatent/BG46255A1/en
Publication of CS246452B1publicationCriticalpatent/CS246452B1/en