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 Richard Karasek, Vaclav JenistafiledCriticalRichard Karasek
Priority to CS828786ApriorityCriticalpatent/CS232221B1/en
Publication of CS878682A1publicationCriticalpatent/CS878682A1/en
Publication of CS232221B1publicationCriticalpatent/CS232221B1/en