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 Vychodil Miloslav, Stanislav Prom Fyz Michal, Vladimir KleinerfiledCriticalVychodil Miloslav
Priority to CS869902ApriorityCriticalpatent/CS258200B1/en
Publication of CS990286A1publicationCriticalpatent/CS990286A1/en
Publication of CS258200B1publicationCriticalpatent/CS258200B1/en