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 Prousek, Adolf JurasekfiledCriticalJosef Prousek
Priority to CS2478ApriorityCriticalpatent/CS194049B1/cs
Publication of CS194049B1publicationCriticalpatent/CS194049B1/cs