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 Frantisek Liska, Ladislav Alexa, Ladislav Becvar, Jindrich MalkusfiledCriticalFrantisek Liska
Priority to CS600575ApriorityCriticalpatent/CS186944B1/cs
Publication of CS186944B1publicationCriticalpatent/CS186944B1/cs