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 Vyzk Ustav PetrochemfiledCriticalVyzk Ustav Petrochem
Priority to CS904595ApriorityCriticalpatent/CS276877B6/cs
Publication of CS459590A3publicationCriticalpatent/CS459590A3/cs
Publication of CS276877B6publicationCriticalpatent/CS276877B6/cs