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 Zdenek Ing HvizdalfiledCriticalZdenek Ing Hvizdal
Priority to CS845107ApriorityCriticalpatent/CS241682B1/en
Publication of CS510784A1publicationCriticalpatent/CS510784A1/en
Publication of CS241682B1publicationCriticalpatent/CS241682B1/en