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 Broz, Vaclav Kopacka, Lumir SasekfiledCriticalJan Broz
Priority to CS536777ApriorityCriticalpatent/CS194455B1/cs
Publication of CS194455B1publicationCriticalpatent/CS194455B1/cs