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 Viliam Ing LehutafiledCriticalViliam Ing Lehuta
Priority to CS811386ApriorityCriticalpatent/CS230854B1/en
Publication of CS138681A1publicationCriticalpatent/CS138681A1/en
Publication of CS230854B1publicationCriticalpatent/CS230854B1/en