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 Lubir Ing Dvorak, Milos Ing RabiskafiledCriticalLubir Ing Dvorak
Priority to CS842470ApriorityCriticalpatent/CS239050B1/en
Publication of CS247084A1publicationCriticalpatent/CS247084A1/en
Publication of CS239050B1publicationCriticalpatent/CS239050B1/en