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 Svoboda, Karel KrausfiledCriticalVaclav Svoboda
Priority to CS903577ApriorityCriticalpatent/CS191831B1/cs
Publication of CS191831B1publicationCriticalpatent/CS191831B1/cs