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 Josef Kohout, Michal Ing SvobodafiledCriticalJosef Kohout
Priority to CS886172ApriorityCriticalpatent/CS269413B1/en
Publication of CS617288A1publicationCriticalpatent/CS617288A1/en
Publication of CS269413B1publicationCriticalpatent/CS269413B1/en