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 Tkac Ivan, Bretislav Cajka, Eduard Ing RiedelfiledCriticalTkac Ivan
Priority to CS849302ApriorityCriticalpatent/CS243859B1/en
Publication of CS930284A1publicationCriticalpatent/CS930284A1/en
Publication of CS243859B1publicationCriticalpatent/CS243859B1/en