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 Ing Csc Pridal, Franc Vladimir, Karel Komarek, Jaroslav Chmelar, Jan KyralfiledCriticalJosef Ing Csc Pridal
Priority to CS878942ApriorityCriticalpatent/CS263888B1/en
Publication of CS894287A1publicationCriticalpatent/CS894287A1/en
Publication of CS263888B1publicationCriticalpatent/CS263888B1/en