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 Novotny Frantisek, Beran JaroslavfiledCriticalNovotny Frantisek
Priority to CS852293ApriorityCriticalpatent/CS252202B1/en
Publication of CS229385A1publicationCriticalpatent/CS229385A1/en
Publication of CS252202B1publicationCriticalpatent/CS252202B1/en