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 Vaclav FialafiledCriticalVaclav Fiala
Priority to CS148878ApriorityCriticalpatent/CS194096B1/cs
Publication of CS194096B1publicationCriticalpatent/CS194096B1/cs