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 ChoteborskyfiledCriticalVaclav Choteborsky
Priority to CS851472ApriorityCriticalpatent/CS243357B1/en
Publication of CS147285A1publicationCriticalpatent/CS147285A1/en
Publication of CS243357B1publicationCriticalpatent/CS243357B1/en