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 Broz Vaclav, Oldrich Kubat, Milos OpocenskyfiledCriticalBroz Vaclav
Priority to CS841371ApriorityCriticalpatent/CS239887B1/en
Publication of CS137184A1publicationCriticalpatent/CS137184A1/en
Publication of CS239887B1publicationCriticalpatent/CS239887B1/en