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 Smisek, Karel Blesik, Oldrich SedlacekfiledCriticalJosef Smisek
Priority to CS88376ApriorityCriticalpatent/CS266064B1/en
Publication of CS37688A1publicationCriticalpatent/CS37688A1/en
Publication of CS266064B1publicationCriticalpatent/CS266064B1/en