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 Vladimir Pekar, Zdenek Drahy, Jiri RaisfiledCriticalVladimir Pekar
Priority to CS569876ApriorityCriticalpatent/CS183535B1/cs
Publication of CS183535B1publicationCriticalpatent/CS183535B1/cs