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 Josef Brezovsky, Dusan Nemec, Pavel SvehlafiledCriticalJosef Brezovsky
Priority to CS323675ApriorityCriticalpatent/CS183087B1/cs
Publication of CS183087B1publicationCriticalpatent/CS183087B1/cs