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 Karel Ing VitekfiledCriticalKarel Ing Vitek
Priority to CS878935ApriorityCriticalpatent/CS264682B1/en
Publication of CS893587A1publicationCriticalpatent/CS893587A1/en
Publication of CS264682B1publicationCriticalpatent/CS264682B1/en