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 Ladislav Krocak, Vycichl Jaroslav, Jiri Ing ChroustfiledCriticalLadislav Krocak
Priority to CS885566ApriorityCriticalpatent/CS267249B1/en
Publication of CS556688A1publicationCriticalpatent/CS556688A1/en
Publication of CS267249B1publicationCriticalpatent/CS267249B1/en