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 Jiri Ruzicka, Vlastimil PeroutkafiledCriticalJiri Ruzicka
Priority to CS837681ApriorityCriticalpatent/CS240174B1/en
Publication of CS768183A1publicationCriticalpatent/CS768183A1/en
Publication of CS240174B1publicationCriticalpatent/CS240174B1/en