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 Jan PtacekfiledCriticalJan Ptacek
Priority to CS537277ApriorityCriticalpatent/CS194456B1/cs
Publication of CS194456B1publicationCriticalpatent/CS194456B1/cs