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 Vaclava Ing Csc JisovafiledCriticalVaclava Ing Csc Jisova
Priority to CS871449ApriorityCriticalpatent/CS262114B1/en
Publication of CS144987A1publicationCriticalpatent/CS144987A1/en
Publication of CS262114B1publicationCriticalpatent/CS262114B1/en